Quote:
Originally Posted by alohasurftoad
M-Performance brakes are 370 front 345 rear. I'm think the M-sport rotors are smaller but the caliper is the same but i'm not sure.
http://f30.bimmerpost.com/forums/sho...iameter&page=2
EDIT, quickly glanced through that thread and the only difference between the M-Perf and M-Sport is the caliper color and rotors being dimpled. M-Perf and M-Sport rotor diameter is the same |
Depends on if you have a 320/328/330 or a 335/340. The 320/328/330 front M-Sport rotor is 340mm. The 335/340 front rotor is 370mm. Both use the same 345mm rear.
Obviously the 370mm front rotors work on the 320/328/330s as well, but you do need to make sure you have the right caliper for whichever rotor size you're getting.
Quote:
Originally Posted by Kailec
Actually question, since I've only used stock brakes for cars, is it even okay to buy used calipers? I'm sure there's damage over time, after a while do they need to be replaced entirely or can they be fixed up?
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Used calipers are fine. I haven't heard of any with leaky piston seals unless somebody took them apart before (and you can order the piston parts).