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      02-13-2014, 07:18 PM   #35
upstate650
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Drives: 2014 650xi Gran Coupe Msport
Join Date: May 2013
Location: The Hinterlands of Upstate NY

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Quote:
Originally Posted by windtendo View Post
Wow I hadn't heard that before, kind of a bummer. Did AR specifically mention drilled rotors for the X5M are unavailable?
Yes - he said the venting is too complex on an M rotor to drill. He won't drill unles he can do it with out hitting the support structure between the surfaces. If you hit them, you compromise the stability of the rotor, and that's what leads to cracking.

I'm sure he could get the drill through in some spots, but not anything that would be aesthetically pleasing.
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