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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 05-13-2002, 07:04 PM   #1
Booraj323
Rieger/RD/HAMANN/ACS/HRE
 
Join Date: Dec 1969
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Uuc Big Brake Question?

I have a problem with my brakes... whenever i come to a stop there a slight jerk(making me go forward and back) like the rotors are worn unevenly & the wheel shakes when i brake.... the dealer says that it is the pads... but i don't think they know anything about the system... ANY ADVICE
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Old 05-13-2002, 07:26 PM   #2
Delirium
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Join Date: May 2002
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Re: Uuc Big Brake Question?

Quote:
Originally posted by Booraj323
I have a problem with my brakes... whenever i come to a stop there a slight jerk(making me go forward and back) like the rotors are worn unevenly & the wheel shakes when i brake.... the dealer says that it is the pads... but i don't think they know anything about the system... ANY ADVICE
Try contacting UUC Directly, they can probably help you.
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Old 05-14-2002, 12:59 PM   #3
teamdfl
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UUC brakes

The first couple days I had the UUC brakes on my car last fall, I had a mild shimmy under some braking conditions. After checking rotor runout, I found about .005" total runout in the rotors. After trading e-mail with Rob @ UUC, he guessed my rotors came from an early batch of rotors and hats from the prototyping stage that may not have been checked for trueness. I had a GOOD local parts shop take a very fine cut (~.003" per side) off the rotors and the shimmy went away. I checked the rotors after truing and found .001" or less total runout in both rotors.

The fact that my front control arm bushings were completely shot didn't help. I found out this spring the ball joints in the front control arms were bad so that probably also helped amplify brake shimmy.


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