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      10-18-2012, 03:32 PM   #696
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Sara504's Avatar
Drives: 2013 335is
Join Date: Aug 2007
Location: Newport Beach, CA

Posts: 17,680
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Originally Posted by shaq diesel View Post
Rotrs will form a light rust covering if they get wet and are left alone. Once you drive and hit the brakes that is gone. If it's on your wheels then that's just that rust scale getting knocked off the rotors and landing on your wheels. A quick wash (or even a drive in the rain) should get rid of it since that rust scale is not nearly as adhesive as brake dust is on your wheels.

If it doesn't come off easy then it's probably some form of clay or dirt from something you have recently driven through.
Mine have been red for months. Looks terrible. When I wash my car, I scrub and scrub those rotors to try and get it off and nothing works.

2013 335is-Current
2011 335i -Sold 4/13 2006 325i-Sold 7/11