Quote:
Originally Posted by JAJ
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The perfect track-rat package for the E9x brakes would be 355x32 rotors all around with ST-40 calipers. The range of available pad materials is vast, they're a breeze to change, 18" tires and wheels will fit, and nobody will ever miss the two-tenths of an inch in rotor diameter.
Sigh. How hard can this be?
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Many good points there. Remember, a brake set-up needs to consider a number of car specific parameters. You can't just slap on a particular size rotor, then mix and match calipers. Brake bias needs to be considered and that has to consider differing pressures from the master cylinder, swept area, rotor diameter and tire loading under braking. Many kits out there have failed to take this into consideration. Stoptech has always made it a point to try to balance the system. In your example above I would assume significantly smaller pistons would be provided for the rear calipers in order to maintain proper balance.