RandomTroll

2 days ago the front brakeshoes' grip increased over 2 spots on the rim. I found 2 small bulges, about 6 inches apart, each about 3 inches from the valve hole. I had replaced a punctured tube the day before and struggled: the tire a Panaracer RiBMo Pt, is very stiff; I mounted it first March 29 (so much for its puncture-resistance: a goathead's thorn had gotten through.) This was the first time I had taken it off. I took 3 tries: the first time I pinched the tube between the rim and tire, puncturing it in 2 places; the second time I didn't get the bead under the rim properly: after an hour (sitting) the tube popped out and exploded (at the spot where one of the bulges is); both of these are rare events for me: they haven't happened in 10 years, at least. The rim is a Sun CR 16 I mounted on 2009 June 15, about 25,000 miles ago.

Could I have bent the rim mounting the tire? I bent it straight with a locking wrench. It's held for 40 miles. Can I expect it to last long?

Bill Kapaun

It's possible I guess, but hitting potholes with too low air pressure will do the same thing.

zacster

I fixed a front wheel that I crashed hard by taking a vice grip and squeezing it back in line slowly, plus I replaced 3 spokes. This was 9 years ago and I still ride this wheel. So yes, it will last.

Andrew R Stewart 

The usual bent wheel from mounting a tight tire is not small localized dents but more of the taco type of bend. I doubt that the mounting did the damage. As Bill K said it was most likely because during the flat (or after the repair) you rolled over a couple of rocks/bumps/pot holes. Andy

bobotech

Is it possible that the braking path is worn down to the point where its somewhat weakened allowing stresses that would normally not affect a rim to allow it to bend too easily?

FBinNY 

It's possible you pulled the rim flange out when mounting, or it could have been from potholes. The coincidence of the 2 locations has me believing the first theory.

In any case, you did the right thing fixing the problem so you could move on. Unless you were extremely hamfisted the odds are that the rim outlast you, ot until you finish it off some other way. Put this behind you, but either get tires that fit better, get a thinner rim strip, or improve your mounting techniques so it doesn't happen again. (plenty of "tight tire" threads and suggestions here on BF)