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Old 12-20-2012, 06:25 PM   #7
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Join Date: Mar 2006
Location: Southern California
Posts: 25,963
My Ride: Lexus
Originally Posted by rcsummers View Post
4 piston calipers, thats why.
Ok and what does that mean? Toyota Sequoias have four-piston calipers too. E9X M3 has single piston. The 135i has six pistons but the 1M, AFAIK, re-uses the M3's single piston.

My point is more is not always better. This has to do with contact surface area/pad size more than OMG BRAKING POWAR.
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