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Old 06-19-2018, 10:13 PM   #17
Terri Kennedy
There and back again
 
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Join Date: Oct 2003
Carmudgeonly Ride: 2003 BMW 325xiT; looking for a new fun car
Location: New York
Posts: 2,939
Quote:
Originally Posted by rumatt View Post
It's there all the time. Any speed, any pressure. But as you would expect, the vibrations are faster at higher speeds, and stronger under firm braking.

Braking hard at high speed sucks, and makes me curse at my rotors.
I've had this forever. Dealer replaced rotors (and eventually calipers / mounting hardware) multiple times under new car warranty. Out of warranty, I tried various combinations of OEM / aftermarket rotors / calipers, and nothing fixes it 100%. I get the best results with Bavarian Autosport slotted + drilled rotors and OEM pads (had tried various aftermarket pads).

A good re-bedding clears the problem up for a while, then it comes back. So definitely not warpage - just some sort of build-up on the rotors.
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