Originally Posted by
jbonamici
I agree. This doesn't sound like a tube problem. The 1" tube should be plenty to keep that tire on the rim if it's properly mounted and inflated. If you don't believe me, inflate a loose 1" tube to 80 or 90# pressure and see what it looks like.
Well, you couldn't do that. It would burst way before it got up to pressure without the tire there to hold it together, probably having expanded to a giant puffy donut (at 20 psi) first. But your point remains: the volume of the tube far exceeds the volume of the inside of the tire.
The problem here was either an underinflation or something wrong with the tire or rim. Since the tube was underinflated, I'm gonna guess that.