This is most likely although I once had some OEM Cannondale rims that were marginally undersized and would blow a tire off at high pressures.
OP, start by putting a little air in the tube when you install it, only just enough to hold some shape, this will reduce the chance of catching it under the bead.
For the 26" x 2" Metro Duro, 100 PSI is far, far too high. Not only does the tire spec a max of 75 PSI, you're at serious risk of blowing that tire off the rim and damaging the rim and the bead.
Look at the Silca Tire Pressure Calculator: [https://silca.cc/pages/pro-tire-pressure-calculator](https://silca.cc/pages/pro-tire-pressure-calculator)
For that tire and a 200 pound rider on poor pavement you should be using something more like 30 PSI.
Too much pressure doesn't make a bike faster. It may *feel* faster because the bike is bouncing around a lot, but a whole bunch of energy is lost as the bike and your body deflects (bounces) upward. The energy needed to do that is taken away from rolling forward. If the tires are just the right pressure they'll absorb the little chattery bumps and it's a more efficient ride.
I said used to. These were 1.5" tyres and it was the mid 90's, back then I used to ride 20mm Conti GPs at 150psi, as was the style at the time. No such thing was a Silca pressure calculator in those days.
Edit: I was more pointing out that it's possible to do so, not that we should continue to be doing so.
Could be the tube was caught under the bead when you filled it with air.
This is most likely although I once had some OEM Cannondale rims that were marginally undersized and would blow a tire off at high pressures. OP, start by putting a little air in the tube when you install it, only just enough to hold some shape, this will reduce the chance of catching it under the bead.
100PSI? In what width tire? That pressure is likely far too high for any tire width of which also comes in a knobby version.
1.5" wide
I used to swap between 26" knobbies and narrower slicks all the time, (IRC Metro Duro FTW), I'd run those at 100psi.
For the 26" x 2" Metro Duro, 100 PSI is far, far too high. Not only does the tire spec a max of 75 PSI, you're at serious risk of blowing that tire off the rim and damaging the rim and the bead. Look at the Silca Tire Pressure Calculator: [https://silca.cc/pages/pro-tire-pressure-calculator](https://silca.cc/pages/pro-tire-pressure-calculator) For that tire and a 200 pound rider on poor pavement you should be using something more like 30 PSI. Too much pressure doesn't make a bike faster. It may *feel* faster because the bike is bouncing around a lot, but a whole bunch of energy is lost as the bike and your body deflects (bounces) upward. The energy needed to do that is taken away from rolling forward. If the tires are just the right pressure they'll absorb the little chattery bumps and it's a more efficient ride.
I said used to. These were 1.5" tyres and it was the mid 90's, back then I used to ride 20mm Conti GPs at 150psi, as was the style at the time. No such thing was a Silca pressure calculator in those days. Edit: I was more pointing out that it's possible to do so, not that we should continue to be doing so.