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      06-02-2010, 07:40 PM   #2
The HACK
Roger Murdock
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Drives: 2006 MZ4C, 2015 Fiat 500e
Join Date: Oct 2007
Location: Welcome to Jamaica have a nice day

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Modern BMW rotors don't "warp" or become crooked that easily. I've done some very VERY heavy and repeated braking from 120mph down to about 40mph for 10-12 times in a 20 minute span and NEVER had I warped a set of stock BMW rotors.

And I am considered freakishly harsh on brakes by my peers.

What you are experiencing, is rust deposit from the pad sitting in roughly the same position for extended periods of time. Then after that, the few mild stops produced "deposit" where the rust spots are and makes those spots higher than the rest of the rotor surface, creating what feels like a warped rotor sensation. Problem will clear itself in a couple of weeks of daily driving or switching to a more aggressive track oriented compound.