Originally Posted by
IPassGas
Tandem, Ryde Andre (box type) rims, 25,000 miles, riding with 2” tires at 55 psi. I have recently noticed that the front cantilever brake pulses at 1 spot in the rim. The rim is fairly true without a hop at the place in the rim. With calipers I find that the rim is 10 mils wider at the spot relative to the rest of the rim. Have people observed such rim bulges? The brake pulsing is a bit annoying. I am tempted to put the rim in a vise with leather protection and squeeze it a bit, but aluminum doesn’t response nicely like steel.
You'd be surprised. I hit a bad pothole on 20" aluminum rims, it flared the rim sidewall out a bit, no out-of-round, I took an adjustable ("Crescent") wrench, snugged it up around the bend, bent it back easy, varying how far in I put the throat of the wrench, depending on exactly where I wanted the rebend to occur. Worked dandy. That was many years and a lot of miles ago. Rims are near end of life now due to brake sidewall wear, I want discs. Ever since I run the tires 10 lbs higher as protection against that, middle of inflation range (40-60, I went 50 instead of previous 40).