this post was submitted on 09 Sep 2023
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Bicycles

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[โ€“] [email protected] 4 points 1 year ago (1 children)

a tube simply can't withstand 100 psi at a pinch point

That explains why I kept getting punctures on my old tubes at 90psi ๐Ÿ˜ฎ must've been fitting them in a dodgy way after previous repairs

[โ€“] [email protected] 6 points 1 year ago* (last edited 1 year ago) (1 children)

Or as you said, old tubes. Lots of factors, but a good tube will work a fold out unless itโ€™s literally pinched between the rubber and rim.

[โ€“] [email protected] 0 points 1 year ago

I recently patched my tube, and when I inflated it to 40 psi or so, I could hear popping in the tire from the pinches working their way out. And this is despite being careful by preinflating it before putting the tire back on.

I've had the same with new tubes as well. Just be careful when inflating your tube after installing the tire. This particular tear probably could've been avoided by preinflating the tube.