Not sure how but I was googling something and ended up on some BMW M3 forums. those guys are crazy, several of them were running 15" 8-piston brembo's!!
you all must have never seen them on tracks like the nurnburg ring and such......they can stop really good and get right back into the throttle. But I also know of them getting stomped on the autobahn by some cobras and even some worked GTs.....we have even had a couple guys race the M5 and beat them. they are great cars, but cost too darn much.
i love the look of a big brake kit. mine look absolutely awesome behind my wheels. although if i could do it over again, i wouldve gotten the Willwood 6 piston front and 4 piston rear kit. the nice thing about the willwood rears is that they replace the stupid caliper activated parking brake with a drum in disk parking brake.