Thread: Rim brake drags
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Old 06-22-25 | 06:34 PM
  #4  
SoSmellyAir
Method to My Madness
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Joined: Nov 2020
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From: Orange County, California

Bikes: Trek FX 2, Cannondale Synapse x2, Cannondale CAAD4, Santa Cruz Stigmata 3

Originally Posted by pepperbelly
This is the second time since replacing tires that I have come back to my jeep after a 6 mile ride to find a rear rim brake pad rubbing. I noticed pedaling seemed harder the last half mile ir so.
When I put my bike on the carrier I spun the tires looking for stickers and the rear only turned about 6”.
It’s a 2013 Spec Roubaix with Ultegra groupset.
Which generation of Ultegra? Is there a centering adjustment bolt? See Acrobat file (for Ultegra 6800) at URL below on pp. 13-14.

DM-BR0003-09-ENG.pdf

Originally Posted by pepperbelly
It doesn’t rotate easily. I centered it a few days ago after it did the same thing. I made sure there was the same space between the pads and rim on both sides.
I thought I had the wheel all the way up in the dropouts but since I did have it off then reinstalled it I will check that first.
This is the first thing I would check. After that, check that your wheel is spinning straight and not wobbly.

Originally Posted by pepperbelly
Is there any situation that can cause the brake to rotate to one side?
For example:
1. See above re: centering adjustment bolt.
2. You keep hitting your brake caliper on one side.
3. Assuming you have a dual-pivot brake caliper, one pivot is binding. Disassemble, clean, and grease all moving parts.

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