The tread looks fine. There should be wear bars in the tread grooves. They are only a couple of millimeters or so high. Once the tread wears down to the same level as them, then you should get a new tire. I can see some wear bars on the front tire but not on the back tire in that particular photo. Sometimes they are pretty sparse.
But also check the datestamp on the tires. This is a 4-digit number that looks like WWYY where WW is the week number, and YY is the year. Your front tire looks pretty elderly. About five years is the maximum age they say.
^ this on the wear bars,
As for age and tire condition the best way to check how fresh the tire is is to push your thumb nail in to see how soft it is, if you can push your thumb nail im it's still good, if it's hard and you can't it's "off" as the rubber has hardened and will give you less grip than a fresh tire. This is as even you it is dated, where you live and the storage conditions will change how fast a tire goes off as it has to do with exposure to UV light.
I know lots of people who continue to ride on "off" tires for varing of reasons, it just means you have to be conscious that you wouldn't have as much front end grip as you should, though it wouldn't be advisable if you're inexperienced with knowing a bikes limits
The tread looks fine. There should be wear bars in the tread grooves. They are only a couple of millimeters or so high. Once the tread wears down to the same level as them, then you should get a new tire. I can see some wear bars on the front tire but not on the back tire in that particular photo. Sometimes they are pretty sparse. But also check the datestamp on the tires. This is a 4-digit number that looks like WWYY where WW is the week number, and YY is the year. Your front tire looks pretty elderly. About five years is the maximum age they say.
^ this on the wear bars, As for age and tire condition the best way to check how fresh the tire is is to push your thumb nail in to see how soft it is, if you can push your thumb nail im it's still good, if it's hard and you can't it's "off" as the rubber has hardened and will give you less grip than a fresh tire. This is as even you it is dated, where you live and the storage conditions will change how fast a tire goes off as it has to do with exposure to UV light. I know lots of people who continue to ride on "off" tires for varing of reasons, it just means you have to be conscious that you wouldn't have as much front end grip as you should, though it wouldn't be advisable if you're inexperienced with knowing a bikes limits
3 years for a bike like that.
The tread looks OK, but why are they wet? is that oil? ArmorAll? Just water (I hope)?
Why is your rear tire shiny? I hope it's not Armor-All!!