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Old 06-15-21, 04:42 AM
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jccaclimber
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RE: Sidewall failures (clarification, RIM sidewall failures). Not the case above, but I've seen it two times.
First was 700C x 23 mm tires on generic road rims with no wear indicator. They were used until worn thin, and the sidewall eventually cracked.
Second was a kid running a (guessing) 20" diameter x 1.5" wide rim with 2" or so BMX tires. The catch is that he was running something like 120 PSI (don't ask). Over the course of a month or three the sidewalls slowly curled outwards. Surprisingly the sidewall failed before the tire unseated. I'll bet they were pointing outward at a 45° angle before that occurred.
Neither of these were recently.

More directly on topic I did recently fail the sidewalls right above the bead on some older road tires I had. Surprised me because when younger I used tires older than me and never had an issue.
In hindsight, it did correspond with running them at a substantially lower pressure than I usually do.

Last edited by jccaclimber; 06-15-21 at 03:24 PM.
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