Oh and if your really loaded not too much more than the harrops porsche sells Ceramic brakes as an $18000 option on its cars. Mind you they are pretty damn impressive. Oh and as for the comments about the M3 single calipers yes they are actually criticised by car mags, they are great but still not as good as the competitors. Even the CSL which runs bigger brakes again but i think twin piston fronts gets owned on the track by porsche under brakes, but makes up for it in mid corner grip hehe.