Originally Posted by
MauiWowwee
I didn't want to start a new thread and I know I'm digging up an old one. After being told by a lbs that the 18-23 tube will indeed inflate a 25 tire, I went ahead and purchased some Gatorskins in 25 for my bike. I'm actually going up in size from a 23 to a 25. Front tire went on and inflated fine, the back tire ended up having a sidewall blow out. Seems as if the tube gave out and caused the blowout. Sucks that I wrestled with the tire to get the rest of the bead over the rim, and when I finally did and got it aired up, psssssssssh. Any input to this? ****ty tube perhaps? I'm quite hesitant to use another 18-23 tube to inflate a 25 tire at this point.
More likely you pinched the tube between the bead of the tire and the rim somewhere. A tube by itself can't blow a tire off a hook-beaded rim unless you use insane pressures.
Once you have the second bead on, you should put a couple psi in the tube, and work your way around the wheel, pressing the sidewall away from the rim to make sure the tube isn't caught in between.