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      12-11-2008, 12:27 PM   #44
808MGuy
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Drives: 2009 E90 M3
Join Date: Jun 2008
Location: Oahu, Hawaii

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Quote:
Originally Posted by bigjae1976 View Post
Maybe its me but that looks like it came off a car rotting in a junk yard for the past 30 years.
That's what happens to the rotor surface after many high heat cycles from heavy track use. The issue is not the rotor surface but the cracking of the rotor hat. I'm not sure how often those are supposed to be replaced or if they are supposed to be replaced at all. It just seems odd that they would crumble like that.
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09 E90 M3 - Interlagos Blue / Black Novillo / Sycamore Anthracite / Eibach / HRE