Thanks for the advice, everyone, much appreciated!
I've already got the new tire, but will need to solve the brake issue before I equip it, else this will keep happening every few months or so. Was also going to replace brake pads either way. I'm surprised how much more they wore on the rear than the front, given the front is taking the brunt of it.
Originally Posted by
Kontact
The one pad wore into the tire.
The brakes are misaligned because they were assembled by someone who doesn't know what they are doing. They started out off center, where "centered" using the centering screw too much and then the brake pads screwed with until it sorta worked. The brake needs to be re-set up with the centering screw put back into the middle range and the entire caliper rotated in the appropriate direction on the mounting post.
Specifically, the right side of the caliper in the picture is too high.
This is a problem that you can only really have with double pivot brakes (and bad mechanics).
Ah neat, I should look for that other screw. The extra dimension there might be what I was missing. It sounds like you're suggesting:
1) Loosening the tension (to open the calipers up just a little bit)
2) THEN rotating the whole thing to center
... and hopefully it will be correctly centered, with enough reach to consistently clear the tire.
Originally Posted by
Bill Kapaun
Did this bike have 27" wheels and someone swapped in a 622 mm rim?
You know, it might have, but I don't know about its history before I bought it. I do have 622 rim at the moment, fwiw. I don't want to get the bigger one, because I quite like being able to fit 28mm tires on it, and I worry it would not work with a bigger rim.
If, after new pads and proper centering, they still aren't aligning, the Offset holders linked to by CliffordK might be a good fix that won't require changing the entire brake.
Originally Posted by
Eggman84
Your pads are definitely worn. On side pull brakes, as the pads wear, the pads will swing (move) outward and eventually contact the tire. This may be what wore a hole in your tire. You need new pads, your LBS should be able to identify what type they have that will fit. Watch the Park Tool video (<<url removed because less than 10 posts>>) to see how to replace and adjust correctly. In fact, you should watch it before going and getting brake pads.
SGTM, thanks for the link!
And thanks again to everyone that took the time to reply!