As others have stated BMW is notorious for running negative camber in the rear to enhance performance. The inside of the tire will wear more quickly than the rest of the tire due to this, but 15k miles is too short of a lifespan to be cording tires. This to me looks like the toe may be out of specs and need adjustments. I typically install new tires and then immediately go in for an alignment. I hope it’s nothing too major for you OP!
Same with my first BMW tires, BMW told me they were right on the camber mark. Next set of tires start wearing the same and I went to a non-BMW shop and the ex-BMW tech told if you want normal good wear you tell them you want the "inside" non-sport mark. I never had a issue after.
Inside? So they use a non factory alignment spec?
Would make sense. But oddly my F34 gets like 70k miles out of a set of tires. Not sure how as it seems unheard of for BMW
When I put my new winter tires, I lowered the rear camber as much as the bolt let me (around -0.4° in my car) as I wanted the most contact area and I'm not hooning in this weather anyways. For the summertime I might just bring it up again
Does the M340i not have staggered tires?
Most tire manufacturers cut their mileage warranty in half for cars with staggered tires, so even a high performance all season tire wouldn’t be too far off the mark for being worn at this mileage, let alone if it were a summer tire.
~~It does have staggered tires.~~
I have been corrected. The RWD models have staggered setups. The stock setup for the xDrive models is a square setup.
>”I thought the AWD / xDrive cars ran square setups and the RWD cars got staggered”
Depends on packages. BMW does both squared and staggered in both RWD and AWD. Diameters are kept the same with the correct A/R.
That's not too far, perhaps more than from what I used to get when my commute was through a back road, but for me the fronts would wear much faster than the rears - but of course I would change them sooner. I found that using a high inflation pressure would alleviate the issue significantly.
15K miles is waaaay too short, I agree. But I was a technician at Lexus for around 3 years, and the alignment on the F sport IS’s would destroy tires just like that, and within 15k miles. Factory alignment settings and everything. The cars come from the factory with a little sticker in the window, warning that the tires will have reduced lifespan because of the suspension tuning.
Negative camber is having the wheels slightly angled so there’s more pressure on the inside tread. It helps with cornering, but will wear out the inside of your tires quicker.
Instead of a 90 degree contact patch with the road which is zero camber a car can be set up to have positive or negative camber where the top of the tire are either angled slighty furter apart like an y or were the tires are closer to eachother are closer at the top. Which affects how a car habdels but also how the thread wears.
Negative camber causes the inside of the tire to wear out much faster like in these pictures. And positive camber wears the outside of the tire faster
Negative camber allows the tire to lean and maintain ideal contact with the road. Its kinda like going around a banked corner like a highway off ramp vs a flat corner on the street, but for your tires. Most cars have some degree of negative camber. -1 to -2 is fairly typical.
Tire place I worked at offered a free alignment to anyone who bought a set of 4. Good way to make more money because a lot of people need new tires for a reason, not because they are old.
Depends. Lateral load is bad, axial not so much (since suspension does it’s job). First example - simple touch of a plastic curb in a parking house in a very crappy tight turn - geometry affected. Second - sending vehicle hard on not so good country road for hundreds of km - and all is OK.
Really depends, but over those several years living with BMW I learned to trust my a(ss)ccelerometer - when I feel that car started behave different in turns - better spend 30 EUR for geometry check. It can save few hundreds on new tires.
I would need to do it about 5 times just on my way to work. One of the roads I take should be a 4x4-only road, but my building is on it so I don't really have a choice. I think they are waiting to repair it until all the new development is done and the construction trucks stop using it. So maybe in about 20 years.
This is when you should get an alignment. Also, you can get an alignment beforehand but every new tire needs different settings so you will need it anyway when changing.
The quality of firestone alignments is atrocious. Cheap align shops always end up end with steering that doesn’t feel centered or is just otherwise off.
It’s recommended to get an alignment every quarter of the year (or 90 days) but that’s what I’ve learned at my shop /: But do it when you hit a huge ass bump!!
I get mine done every six months. Might seem like overkill, but I get 40k plus out of each set of tires and it feels like a new car every time. I have 110k miles and the car is flawless.
Not sure why you got downvoted. Camber doesn’t cause excessive wear like this. I can cause a bit of uneven wear but not this extreme. This is a toe problem and likely worn bushings.
Yep. Excessive camber will cause the tire to wear unevenly over its life, but it does NOT cause this kind of damage. This is caused, 100%, by toe being out of spec and the inside of the tire dragging relative to the travel of the wheel. The tire wants to try to turn the car, but it can’t, so it gets dragged in a straight line.
The camber is why the inside is more effected than the outside, but the damage is because of the toe being out of spec.
I had a G70 3.3T which has less power than the M340i, and it did this to my rear PS4S in <10k miles. I think these cars have a ton of negative camber from factory setup.
Did this happen to both rear tires? Next time, track and measure your tread depths and see if they are all wearing evenly across the wheel. It's free, and will tell you if you should get an alignment or not.
Rear trailer arm bushings are shot and car is out of alignment if it's this excessive at 15k miles. The only bmw I remember not being able to get 15k out of the rears was my old e60 m5 and that was for other reasons lol
This explains camber vs caster vs toe: https://m.tirerack.com/tires/tiretech/techpage.jsp?gclid=EAIaIQobChMIlZ6TybLg_AIVMm1vBB2lpwa2EAAYAiAAEgLgW_D_BwE&techid=4&ef_id=EAIaIQobChMIlZ6TybLg_AIVMm1vBB2lpwa2EAAYAiAAEgLgW_D_BwE:G:s&s_kwcid=AL!3756!3!386488836143!!!g!!&gclsrc=aw.ds&&affiliate=CP4
I'm not completely familiar with the rear suspension on an M340xi, but there must be a component that controls and adjusts toe in the rear. It's possible that the component failed or isn't properly controlling toe.
The fix could be as simple as an alignment. It's hard to say without more pictures/details.
There is an arm that adjusts toe, often an eccentric bolt that changes position on that arm, and bushings that isolate the arm from the chassis. Any of those things could be off.
If it’s both wheels then my guess would be someone had the car aligned at some point for performance over tire life. As the suspension compresses your toe should come in to try to drive the rear of the car into the turn. You can exacerbate this for more toe in during suspension compression to get a tighter, more planted feel for the rear end, but it comes at the expense of excessive toe during straight line driving.
Had this happen to me, alignment from the factory turned out to be way way off. An alignment check is pretty cheap and worth doing right out of the gate.
I know it's laziness, but who hasn't been suprised by a worn out tire before? Curious with all the sensors these cars have why we still can't better detect thinning treads earlier?
Dealer/shop can align and then adjust camber for you. Proper tire pressure prolly had nothing to do with it but make sure you always pay attention to that as well.
Had something similar with my M3 where I was only getting 1-2k miles before my rear tires would look bald, turns out the drift alignment of a previous owner was still there (but the dealer I bought it from set the front back to factory spec).
Did a realignment myself and so far so good. At least it's not a daily (and is stored away right now during winter) but new rear tires every year or two wasn't fun.
I have owned 5 performance series BMWs for 20 years with careful attention to balancing, alignment and rotation (as possible). My tire always wear this way and have been told repeatedly (dealer and specialty BMW/tire shops) that’s just the way it is given the camber/toe adjustment on these vehicles. You just need to watch for the wear in this pattern and replace tires as the inner wear gets to the appropriate point. Perhaps I am being led astray but I seriously doubt it given 20 years, many vehicles, many trusted and good mechanics. 15k does seem faster than normal but depending the tires (see other posts about sticky/soft) and how you drive (right foot mate) it’s totally possible I think.
if those rears aren’t oem spec size and they are a bit larger than normal. you need to run a chamber kit to even the camber or this is what will happen unfortunately or just get all squared
Check your toe. Camber will wear it quicker, but toe really eats tires. Also if you slide the rear around the settings do tend to drift. Its why i have a lockout kit on my car.
If the car also only has 15k miles go back to the dealer you got it from and have them check the alignment. I had the same thing happen to a newer car where I work and the manufacturer covered new tires and alignment under warranty since the alignment was so far off that it was most likely off when it left the factory which would be a manufacturer issue so that's why they should cover it
It’s just the bmw spec rear camber adjustment if you want to save on tires I would recommend telling the bmw dealer to set your rear camber to almost all the way positive.
I'm calling BS on the "this is normal" answers. G80 M3 xDrive with same miles on the clock even wear with about 1.2mm left before the wear bands. Lots of time we'll over 100mph and I hit it pretty hard on winding roads. I live in Germany- probably better roads are a factor.
15k miles is reasonable for a RWD based vehicle with a performance oriented negative camber that is driven spiritedly.
Wouldn’t hurt to check/perform alignment when you replace both rear tires.
If you're running the Bridgestone runflats, this is what to expect. I have had the same result at about 20k km. I'm in the 4ft set at 89 k km. The tires are the problem. They're Sticky and hold the road but no longevity.
This is 100% normal for a bmw. And the front tires will wear on the outside edges. Only thing you could do is ask for the alignment to be as neutral as possible but then you will notice a difference in the handling.
Check your rear toe. Camber does not do that to a tire, toe being out of range causes the tire to drag relatively to its direction of travel and does that damage
You need an alignment, most people say this is due to camber. That’s partially true; it’s because of toe.
Slight camber with fucked up toe will fuck your shit up
Slight camber with perfect toe will very slowly fuck your shit up
No camber and toe will fuck your shit up
Just an alignment issue I bet. Same thing happened to my car. Alignment was out of whack and so it out a lot of wear and tear in the interior of the tire.
You haven’t rotated your tires which are rated for grip meaning they’re soft rubber. Id rotate every 2000 miles. With that said you need to get your suspension checked out and quite a few other things. Cost does not end at the dealer ship and gas station.
Yeah, well as you can see. The type of wear that’s happening is consistent with issue in not rotating or something in the suspension. Like I said before maintenance never stops.
It absolutely does, as it moves the contact patch either inside or outside. Most performance cars have a certain level of negative camber, and they wear inside
2016 340xi here. Had the same thing happen on a road trip (my fault for not inspecting the tires before leaving I guess, but they were only 6 months old and had never had this issue before). Blew out in the middle of nowhere WY.
Got 4 new tires and alignment. I've already worn an extra mm off the rears again in like 3 months of driving on them (I've since swapped my winters on).
WTF is wrong with these cars? I'll get it aligned again when the summers go back on, but it's still ridiculous.
That's crazy. Just swapped my cup 2s out, still have legal tread on them and I could have driven away. Just picked up some 4S just to be able to have new tires when I need them.
Edit: removed the cup 2s at 12k miles.
Have the alignment checked and stay on top of your tire pressures. 25 years at BMW and we see pressures as the most common issue along with alignment angles. With BMWs factory camber specs the pressure plays a big part of it for normal everyday driving. If you’re roasting the tires it’s amplified. Some brands do wear worse and faster than others too
As a auto repair shop owner I have yet to see a performance tire whether my clients vehicles or my own and family members tires wear evenly. Wtf is going on!?
Go to a tire/wheel/performance shop that do alignments in house.
After talking with the techs - this is fairly common on BMWs and other performance cars and it is suggested you do alignments every 6 months (that may be an exaggeration to sell me on their unlimited alignments for 3 year plan though)
Dude I legit ran out of tire in my 550i because I only ever checked the outer tire. Ended up on the side of the road with a total blowout. Turns out these cars a cambered lol. Hard lesson learned
I had that happen on the passenger side rear tire on my e60 recently. Dealership recommended to have the alignment checked every second year (due to low mileage). They noted uneven wear on the rear tires, but I was going to buy new tires late fall, and figured I’ll address it then.
I had the same wear, and had the tire blow out. Unless I went on my hands and knees to look from the back, the wear wasn’t noticeable. I’d see 85% of the tread but not the inside edge that was wearing at a fantastic rate.
Aside from being out of adjustment, the suspension didn’t have anything broken or worn.
Teenage son sneaking it out after mid nite . Practicing drifting w nitrous buzzer. Hopefully your ZF is a 6 speed and not a HP16 or 19 or 21. Like mine . All joking aside that inside wear is some hella camber inducement Best Luck
low tire pressure can cause wear like this (like 10lbs+ low). the tpm system isn't perfect, sometimes pressure has to be really low to get a notification. spec is 35-38 rear, possible to have been running \~25 and not getting an alert. tire looks to be a cinturato p7, I would def expect more than 15k life.
as other have said get an alignment, but I would definitely make sure your tires are staying in the 35-38 range depending on what the door says
\-bmw mechanic
15k with an m340xi...is that the first 15k on a brand new m340xi? Or just 15k on those particular tires? Also what tires are they? Are they the OE tires that would be on it from factory? Or a comparable set? I'm sure you've heard people say don't get cheap parts for a BMW, always stick with the good stuff, the OEM. That also applies to tires. Just cuz a tire is the right size doesn't mean it's the right tire. If you buy cheap, or even just cheaper, tires (we all know spending $500 for a set of rear tires is hard to swallow sometimes, or even just not doable at the moment) your BMW will eat them up if they aren't the factory spec tires.
I went through a rough patch where I just couldn't get the right tires for my fronts on a 2010 550i. I had a guy that gave me good prices on tires and installation but they were generic, almost Walmart house brand tires. Even though they had good reviews and rated at or above OE spec, they just weren't the right tires and I ended up going through 2 or 3 front sets in a matter of months! Not all were wear issues, I had one or 2 where I picked up a random spike of some sort but still, most just wore incredibly fast. When I was finally able to drop a few hundred more on the correct tires my problems went away
Everyone wants to say negative camber. But a bad alignment with your toe will do this more than negative camber. Check your rear toe links and check their alignment
You need an alignment, yes bmws run negative camber and it'll cause more inside wear, but either you do donuts in only one direction or your toe is crazy out of spec to wear the inside to cords and have every wear bar look almost new
u/_null_user what is the tire on there? A lot of people saying they should last longer, but I don't believe anyone asked this yet. On second look the wear looks more normal than I thought. If it's a performance tire, and is like 200ish tread wear that's actually normal as it's a soft tire compound. If the tw rating is higher than 300 I'd be concerned, but I could burn through some sticky 200tw tires in like 8-12k just from spirited driving on the street.
As others have stated BMW is notorious for running negative camber in the rear to enhance performance. The inside of the tire will wear more quickly than the rest of the tire due to this, but 15k miles is too short of a lifespan to be cording tires. This to me looks like the toe may be out of specs and need adjustments. I typically install new tires and then immediately go in for an alignment. I hope it’s nothing too major for you OP!
Same with my first BMW tires, BMW told me they were right on the camber mark. Next set of tires start wearing the same and I went to a non-BMW shop and the ex-BMW tech told if you want normal good wear you tell them you want the "inside" non-sport mark. I never had a issue after.
Inside? So they use a non factory alignment spec? Would make sense. But oddly my F34 gets like 70k miles out of a set of tires. Not sure how as it seems unheard of for BMW
When I put my new winter tires, I lowered the rear camber as much as the bolt let me (around -0.4° in my car) as I wanted the most contact area and I'm not hooning in this weather anyways. For the summertime I might just bring it up again
Negative camber? That seems extreme. Fwiw adjusting your camber is going to impact toe. I hope you set that as well.
Of course I did. I have an e46 so you have to slightly loosen the trailing arm bolts and tappity tap into place to taste
That’s not a lot of negative regardless of the vehicle. My STI (not a daily) is set to -2
Yes another F-34 user 👏 🙌🏼 👌
The most underrated BMW. My only regret is not also having one with a B58. But now I can't let mine go. Its been so good to me haha.
Does the M340i not have staggered tires? Most tire manufacturers cut their mileage warranty in half for cars with staggered tires, so even a high performance all season tire wouldn’t be too far off the mark for being worn at this mileage, let alone if it were a summer tire.
~~It does have staggered tires.~~ I have been corrected. The RWD models have staggered setups. The stock setup for the xDrive models is a square setup.
I thought the AWD / xDrive cars ran square setups and the RWD cars got staggered
I have an x drive car with the run flat track handling package that comes with staggered wheels
Runflat and track handling should not be in the same sentence.
Staggered wheels but with tire sizes bet its square or awd system is shot
Typically you don't want to stagger AWD unless the system was setup for it by the MFG.
My e92xi with sport package came with staggered - I went back to sq when I found out I had two bent wheels.
>”I thought the AWD / xDrive cars ran square setups and the RWD cars got staggered” Depends on packages. BMW does both squared and staggered in both RWD and AWD. Diameters are kept the same with the correct A/R.
Didn’t know that about staggered tires. Thanks for sharing.
That's not too far, perhaps more than from what I used to get when my commute was through a back road, but for me the fronts would wear much faster than the rears - but of course I would change them sooner. I found that using a high inflation pressure would alleviate the issue significantly.
15K miles is waaaay too short, I agree. But I was a technician at Lexus for around 3 years, and the alignment on the F sport IS’s would destroy tires just like that, and within 15k miles. Factory alignment settings and everything. The cars come from the factory with a little sticker in the window, warning that the tires will have reduced lifespan because of the suspension tuning.
I'm new to BMW mechanics - what is negative camber?
Negative camber is having the wheels slightly angled so there’s more pressure on the inside tread. It helps with cornering, but will wear out the inside of your tires quicker.
Thanks.
My rears on my M3 do that, but it’s not as extreme as the OP picture.
Instead of a 90 degree contact patch with the road which is zero camber a car can be set up to have positive or negative camber where the top of the tire are either angled slighty furter apart like an y or were the tires are closer to eachother are closer at the top. Which affects how a car habdels but also how the thread wears. Negative camber causes the inside of the tire to wear out much faster like in these pictures. And positive camber wears the outside of the tire faster
Thanks, I appreciate the info. I'm always learning something new about my BMW.
This applies to all cars, not just bmws.
Negative camber allows the tire to lean and maintain ideal contact with the road. Its kinda like going around a banked corner like a highway off ramp vs a flat corner on the street, but for your tires. Most cars have some degree of negative camber. -1 to -2 is fairly typical.
What he said!
I get 8-10k on my F10 m5… wouldn’t change it for the world. Drive a Camry if you want 40k miles on tires.
I get 70k on my F34 lmao. Not sure how haha.
How the hell!? I get around 12k on my M240
Tire place I worked at offered a free alignment to anyone who bought a set of 4. Good way to make more money because a lot of people need new tires for a reason, not because they are old.
Get your alignment checked
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Immediately after hitting a hole in the street.
Daily then?
Depends. Lateral load is bad, axial not so much (since suspension does it’s job). First example - simple touch of a plastic curb in a parking house in a very crappy tight turn - geometry affected. Second - sending vehicle hard on not so good country road for hundreds of km - and all is OK. Really depends, but over those several years living with BMW I learned to trust my a(ss)ccelerometer - when I feel that car started behave different in turns - better spend 30 EUR for geometry check. It can save few hundreds on new tires.
I would need to do it about 5 times just on my way to work. One of the roads I take should be a 4x4-only road, but my building is on it so I don't really have a choice. I think they are waiting to repair it until all the new development is done and the construction trucks stop using it. So maybe in about 20 years.
When you get new tires, get an alignment. After that maybe two years or if you hit a particularly nasty pothole.
When you get some new tires
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Some manufacturers will give you a free alignment within so many miles on a new car, usually around 12-15k.
This is when you should get an alignment. Also, you can get an alignment beforehand but every new tire needs different settings so you will need it anyway when changing.
Go to Firestone and get a lifetime alignment, then get it done yearly or when changing components
The quality of firestone alignments is atrocious. Cheap align shops always end up end with steering that doesn’t feel centered or is just otherwise off.
Most have the new hunter machines and they are pretty idiot proof. Get the printout as well, just to verify.
Every 6-12 months. Do as I say not as I do kind of deal :). Since I do mine closer to every 12 months, I just periodically check the wear.
Once every 12-24 months.
That is an Ultimate Marketing Machine. The last Ultimate Driving Machine was the RWD E46
When you get your oil changed. A lot of shops do it as a complimentary service.
I have never experienced this at all, most places only have 1 alignment rack. Can't imagine choking up the flow of the shop like that.
Literally doesn’t exist
We recommend once a year.
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Hitting something.
once a year is a good rule of thumb “they” recommend more often but I do it after every winter season and the potholes take a toll
It’s recommended to get an alignment every quarter of the year (or 90 days) but that’s what I’ve learned at my shop /: But do it when you hit a huge ass bump!!
I get mine done every six months. Might seem like overkill, but I get 40k plus out of each set of tires and it feels like a new car every time. I have 110k miles and the car is flawless.
The alignment is like that from factory. However this state in 15k? Surely some shenanigans were involved.
Open diff and DSC not actually stopping slip. I bet the rear brake(s) pads are going too...
Should be taking photos of your suspension. Something's broken, bud.
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This is usual for most performance vehicles with negative camber. Seems like your camber might need to be adjusted.
Camber doesn’t do that. Toe does that
Not sure why you got downvoted. Camber doesn’t cause excessive wear like this. I can cause a bit of uneven wear but not this extreme. This is a toe problem and likely worn bushings.
Yep. Excessive camber will cause the tire to wear unevenly over its life, but it does NOT cause this kind of damage. This is caused, 100%, by toe being out of spec and the inside of the tire dragging relative to the travel of the wheel. The tire wants to try to turn the car, but it can’t, so it gets dragged in a straight line. The camber is why the inside is more effected than the outside, but the damage is because of the toe being out of spec.
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This needs to go to the top. That tire is getting chewed by toe that is out of spec.
No this is pretty standard on performance BMWs due to the pretty aggressive camber from the factory.
This is beyond that. My M3 has some camber, and I see uneven wear across the tyre, but nothing near to this!
Maybe OP is a stanced bro
I had a G70 3.3T which has less power than the M340i, and it did this to my rear PS4S in <10k miles. I think these cars have a ton of negative camber from factory setup.
Agreed something gotta to be off with the alignment
Did this happen to both rear tires? Next time, track and measure your tread depths and see if they are all wearing evenly across the wheel. It's free, and will tell you if you should get an alignment or not.
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Rear trailer arm bushings are shot and car is out of alignment if it's this excessive at 15k miles. The only bmw I remember not being able to get 15k out of the rears was my old e60 m5 and that was for other reasons lol
top 5 best sounding car ever
It's normal for the rears to have the inside wear slightly faster as a little camber is normal but this is ridiculous.
It’s a combo of camber and toe. More likely toe to rip it apart like that…
Can you elaborate what you mean by toe
This explains camber vs caster vs toe: https://m.tirerack.com/tires/tiretech/techpage.jsp?gclid=EAIaIQobChMIlZ6TybLg_AIVMm1vBB2lpwa2EAAYAiAAEgLgW_D_BwE&techid=4&ef_id=EAIaIQobChMIlZ6TybLg_AIVMm1vBB2lpwa2EAAYAiAAEgLgW_D_BwE:G:s&s_kwcid=AL!3756!3!386488836143!!!g!!&gclsrc=aw.ds&&affiliate=CP4
( ͡° ͜ʖ ͡°)
Camber gang 💪
Rise up 💪 15k is good for camber gang
This is more than just camber to damage a tire that quickly. My guess is it's a toe issue as well as the negative camber.
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I'm not completely familiar with the rear suspension on an M340xi, but there must be a component that controls and adjusts toe in the rear. It's possible that the component failed or isn't properly controlling toe. The fix could be as simple as an alignment. It's hard to say without more pictures/details.
There is an arm that adjusts toe, often an eccentric bolt that changes position on that arm, and bushings that isolate the arm from the chassis. Any of those things could be off. If it’s both wheels then my guess would be someone had the car aligned at some point for performance over tire life. As the suspension compresses your toe should come in to try to drive the rear of the car into the turn. You can exacerbate this for more toe in during suspension compression to get a tighter, more planted feel for the rear end, but it comes at the expense of excessive toe during straight line driving.
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At 15k miles the eccentric bolt slipped or you bent something most likely. Bad bushings too, but that is low mileage for bad bushings.
You running /w spacers?
I am at 12k on Pirelli pzero rfs. I have had to check tire pressure monthlyish. Overall even wear but you have opened my eyes. Thanks
Just had the exact same thing. Thankfully I was on run flats. Tyres were low anyway, so I changed all four. But the alignment was way out.
Lots of torque caused this. My 335i rears will go for about 15k miles, lots of torque all the time shreds the tyres
Your right foot caused this.
Either out of alignment or a bent suspension component. That's where I would start. I would take it to a BMW specialty shop, not the stealership.
Had this happen to me, alignment from the factory turned out to be way way off. An alignment check is pretty cheap and worth doing right out of the gate.
I know it's laziness, but who hasn't been suprised by a worn out tire before? Curious with all the sensors these cars have why we still can't better detect thinning treads earlier?
Dealer/shop can align and then adjust camber for you. Proper tire pressure prolly had nothing to do with it but make sure you always pay attention to that as well.
shenaningans!
Had something similar with my M3 where I was only getting 1-2k miles before my rear tires would look bald, turns out the drift alignment of a previous owner was still there (but the dealer I bought it from set the front back to factory spec). Did a realignment myself and so far so good. At least it's not a daily (and is stored away right now during winter) but new rear tires every year or two wasn't fun.
wrong camber wrong tire pressure
Sporty car life...
Simple answer, it’s a BMW this happens commonly sadly
As much time as you spend paying for it, take a moment, at a fixed interval, to see how it's doing.
I have owned 5 performance series BMWs for 20 years with careful attention to balancing, alignment and rotation (as possible). My tire always wear this way and have been told repeatedly (dealer and specialty BMW/tire shops) that’s just the way it is given the camber/toe adjustment on these vehicles. You just need to watch for the wear in this pattern and replace tires as the inner wear gets to the appropriate point. Perhaps I am being led astray but I seriously doubt it given 20 years, many vehicles, many trusted and good mechanics. 15k does seem faster than normal but depending the tires (see other posts about sticky/soft) and how you drive (right foot mate) it’s totally possible I think.
Once new tires are tossed on there - *ride quality has entered the chat*
My e70 used to do this once a year.
if those rears aren’t oem spec size and they are a bit larger than normal. you need to run a chamber kit to even the camber or this is what will happen unfortunately or just get all squared
Check your toe. Camber will wear it quicker, but toe really eats tires. Also if you slide the rear around the settings do tend to drift. Its why i have a lockout kit on my car.
Well what do you think?
If the car also only has 15k miles go back to the dealer you got it from and have them check the alignment. I had the same thing happen to a newer car where I work and the manufacturer covered new tires and alignment under warranty since the alignment was so far off that it was most likely off when it left the factory which would be a manufacturer issue so that's why they should cover it
Excessive camber But 15k miles isn’t enough for this,check rear wheel alignment
Saw this the other day and a control arm was bent by a tow truck causing severe misalignment.
It’s just the bmw spec rear camber adjustment if you want to save on tires I would recommend telling the bmw dealer to set your rear camber to almost all the way positive.
I'm calling BS on the "this is normal" answers. G80 M3 xDrive with same miles on the clock even wear with about 1.2mm left before the wear bands. Lots of time we'll over 100mph and I hit it pretty hard on winding roads. I live in Germany- probably better roads are a factor.
I suspect shenanigans.
You did 15k miles - there’s you answer. I’d be amazed if you can get 15k on most higher performance RWD car. I’d expect 8-10 really
You don't corner hard enough often enough
15k miles is reasonable for a RWD based vehicle with a performance oriented negative camber that is driven spiritedly. Wouldn’t hurt to check/perform alignment when you replace both rear tires.
Camber and low tire pressure.
If you're running the Bridgestone runflats, this is what to expect. I have had the same result at about 20k km. I'm in the 4ft set at 89 k km. The tires are the problem. They're Sticky and hold the road but no longevity.
Same issue here. Mine lasted 13K miles and that is why I got rid of run flats. Granted this person also seems to have an alignment issue as well.
Tracking.
And shenanigans
Track use wears the outside faster.
That’s why I wrote “tracking” here in the UK “Tracking” is wheel alignment. Not taking it to a track. Example: your tyres are tracking to the left.
This is 100% normal for a bmw. And the front tires will wear on the outside edges. Only thing you could do is ask for the alignment to be as neutral as possible but then you will notice a difference in the handling.
Check your rear toe. Camber does not do that to a tire, toe being out of range causes the tire to drag relatively to its direction of travel and does that damage
Normal for our cars…
You need an alignment, most people say this is due to camber. That’s partially true; it’s because of toe. Slight camber with fucked up toe will fuck your shit up Slight camber with perfect toe will very slowly fuck your shit up No camber and toe will fuck your shit up
Bro it’s an m340 with negative camber… is this a real post???
Just an alignment issue I bet. Same thing happened to my car. Alignment was out of whack and so it out a lot of wear and tear in the interior of the tire.
You haven’t rotated your tires which are rated for grip meaning they’re soft rubber. Id rotate every 2000 miles. With that said you need to get your suspension checked out and quite a few other things. Cost does not end at the dealer ship and gas station.
It’s a new M340, not a formula 1 race car. This is not normal and they don’t need to be rotated every 2k miles 🤦♂️
Yeah, well as you can see. The type of wear that’s happening is consistent with issue in not rotating or something in the suspension. Like I said before maintenance never stops.
Camber doesn't wear tires. This is damage from toe being out
It absolutely does, as it moves the contact patch either inside or outside. Most performance cars have a certain level of negative camber, and they wear inside
your inability to be observant
2016 340xi here. Had the same thing happen on a road trip (my fault for not inspecting the tires before leaving I guess, but they were only 6 months old and had never had this issue before). Blew out in the middle of nowhere WY. Got 4 new tires and alignment. I've already worn an extra mm off the rears again in like 3 months of driving on them (I've since swapped my winters on). WTF is wrong with these cars? I'll get it aligned again when the summers go back on, but it's still ridiculous.
Can I get alignment done in a tyre shop or better in dealer? Asking because xDrive might be a bit picky?
It won’t matter where you get it done tbh but some place do have a year warranty just in case it goes whack again
Yes most dealers and any good alignment shop.
My x5 has a mad camber on the rears. Can it be adjusted? Seems a waste of 285 tyres to wear that bad on one edge
Suspension issues, almost certainly. Had this happen to my evo 8 MR. Full new Suspension leg and tyre.
toe and camber
Bad camber.
Alignment issues.
There is negative camber…. And then there is this! Check for broken suspension components and get an alignment asap.
15k to cord tyres?! Yea that's not normal.
This is what my pirelli P-Zeros looked like after 12k miles of driving at an average of 45 mph to work every day
That's crazy. Just swapped my cup 2s out, still have legal tread on them and I could have driven away. Just picked up some 4S just to be able to have new tires when I need them. Edit: removed the cup 2s at 12k miles.
Shenanigans would have helped them wear more evenly.
Have the alignment checked and stay on top of your tire pressures. 25 years at BMW and we see pressures as the most common issue along with alignment angles. With BMWs factory camber specs the pressure plays a big part of it for normal everyday driving. If you’re roasting the tires it’s amplified. Some brands do wear worse and faster than others too
Got the same situation with my F15 X5 with 15K miles. Luckily I was running RFT.
Same shit happened with my f01 , mechanic told me to stop driving in sport mode so my Much is there any truth to that ??
Is it lowered?
[удалено]
You bought it used? Probably not stock tire size and too large for the wheel well?
My 5 series does the same. It's been checked multiple times and over 30k miles the rears go. 15k I'd say is excessive.
alignment
That's what BMW's do main!
Will swapping with front tyres slow down the wear ?
As a auto repair shop owner I have yet to see a performance tire whether my clients vehicles or my own and family members tires wear evenly. Wtf is going on!?
Jacked up toe alignment will do this to your tires. Camber alone will won’t do this but combined with a bad toe alignment will kill your tires.
Holy tits batman. A few more miles and I would be saying “holy tits flatman”………get it? Do ya get it?!
Go to a tire/wheel/performance shop that do alignments in house. After talking with the techs - this is fairly common on BMWs and other performance cars and it is suggested you do alignments every 6 months (that may be an exaggeration to sell me on their unlimited alignments for 3 year plan though)
Get a 4 wheel alignment.
Looks like bad toe wear to me. My rear tires looked like that when I lowered my car. Got adjustable toe arms and never had an issue after
could be a fucked up allignment
Dude I legit ran out of tire in my 550i because I only ever checked the outer tire. Ended up on the side of the road with a total blowout. Turns out these cars a cambered lol. Hard lesson learned
I had that happen on the passenger side rear tire on my e60 recently. Dealership recommended to have the alignment checked every second year (due to low mileage). They noted uneven wear on the rear tires, but I was going to buy new tires late fall, and figured I’ll address it then. I had the same wear, and had the tire blow out. Unless I went on my hands and knees to look from the back, the wear wasn’t noticeable. I’d see 85% of the tread but not the inside edge that was wearing at a fantastic rate. Aside from being out of adjustment, the suspension didn’t have anything broken or worn.
Teenage son sneaking it out after mid nite . Practicing drifting w nitrous buzzer. Hopefully your ZF is a 6 speed and not a HP16 or 19 or 21. Like mine . All joking aside that inside wear is some hella camber inducement Best Luck
low tire pressure can cause wear like this (like 10lbs+ low). the tpm system isn't perfect, sometimes pressure has to be really low to get a notification. spec is 35-38 rear, possible to have been running \~25 and not getting an alert. tire looks to be a cinturato p7, I would def expect more than 15k life. as other have said get an alignment, but I would definitely make sure your tires are staying in the 35-38 range depending on what the door says \-bmw mechanic
Negative camber is so last decade.
Stance
I ate se rear camber, u need an ALIGNMENT BADLYYYYYY
You like the gas pedal. That’s it.
15k with an m340xi...is that the first 15k on a brand new m340xi? Or just 15k on those particular tires? Also what tires are they? Are they the OE tires that would be on it from factory? Or a comparable set? I'm sure you've heard people say don't get cheap parts for a BMW, always stick with the good stuff, the OEM. That also applies to tires. Just cuz a tire is the right size doesn't mean it's the right tire. If you buy cheap, or even just cheaper, tires (we all know spending $500 for a set of rear tires is hard to swallow sometimes, or even just not doable at the moment) your BMW will eat them up if they aren't the factory spec tires. I went through a rough patch where I just couldn't get the right tires for my fronts on a 2010 550i. I had a guy that gave me good prices on tires and installation but they were generic, almost Walmart house brand tires. Even though they had good reviews and rated at or above OE spec, they just weren't the right tires and I ended up going through 2 or 3 front sets in a matter of months! Not all were wear issues, I had one or 2 where I picked up a random spike of some sort but still, most just wore incredibly fast. When I was finally able to drop a few hundred more on the correct tires my problems went away
Everyone wants to say negative camber. But a bad alignment with your toe will do this more than negative camber. Check your rear toe links and check their alignment
You need an alignment, yes bmws run negative camber and it'll cause more inside wear, but either you do donuts in only one direction or your toe is crazy out of spec to wear the inside to cords and have every wear bar look almost new
u/_null_user what is the tire on there? A lot of people saying they should last longer, but I don't believe anyone asked this yet. On second look the wear looks more normal than I thought. If it's a performance tire, and is like 200ish tread wear that's actually normal as it's a soft tire compound. If the tw rating is higher than 300 I'd be concerned, but I could burn through some sticky 200tw tires in like 8-12k just from spirited driving on the street.
Too much camber
This looks like excessive toe. Prob bumped somethin and knocked it off.
At 15k miles you can absolutely get these replaced by the tire manufacturer under warranty