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Old 01-17-2013, 11:20 AM   #15
supershaft
because I can
 
Joined: Sep 2010
Location: San Francisco Bay area
Oddometer: 8,275
Brake drums are a problem for us. Too bad every airhead ever sold didn't have the brake shoe lining replaced with a lining that actually wears versus the drum! Those linings don't get old and hard. They come brand new like that. The drum wear isn't necessarily from high miles or maladjusted brakes. It's from the linings. A curve dug into the center of the drum? I call that a glaciated drum. The same basic U shape as a glaciated valley. It's from those rock hard stock brake shoes. I see it ALL the time on all the beemers I have been around.
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