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Old 03-02-2012, 12:58 PM
TRS550 TRS550 is offline
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Location: Ohio
Join Date: Jan 2010
Posts: 1,353
Mein Auto: 2007 550i
Originally Posted by terrystu View Post
Rotors almost never warp. Have you considered thrust arm bushings? When they fail, they cause your exact symptoms.

If anything, BMW's rotors are known to warp. The design on BMW rotors is intentionally thin to reduce weight. That's why the recommendation is to never turn BMW rotors. There typically isn't enough material on them to do so without going below the min thickness stamped into them.

They're thin to start with and that's why they warp so easily.

I had mine replaced at 70K. Pads were fine. Rotors were warped. I had the same symptoms as the OP.
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