Originally Posted by pbonsalb
But that single piston floater is better than some six piston calipers. BMW took the 6 piston calipers off the 135i and put the single piston floater on when it made the 1M.
That's because BMW re-used the whole M3 suspension F+R on the 1M. It's about cost-effectiveness. Not about these brakes being so awesome.
Additionally the 1M weighs quite a bit less than the E9x M3.
The OPs approach is nice, but if you really put the OEM brakes to the test on a racetrack and push the car to its limit, this cooling will not save you.
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