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      01-18-2012, 04:13 PM   #2
e90pilot
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Drives: E90 325i
Join Date: Jul 2005
Location: Oakland, CA

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Those could be cracks in the pad material on the surface of the rotor. You can to see if it comes off by using a Brillo pad and brake cleaner. You may need a torch to heat up the rotor. I read this suggestion from the Racing Brake website. It's strange that you don't have any hot spots. The aside from the cracks your rotor looks ok. Take a shot of the rest of the rotor.
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