Originally Posted by jparnes1
For my driving, these brakes have enormous stopping power. Have you experienced them on the track? How do they compare to dusty brakes?
My 09 and 11 Z4 35i both had brake issues at the track. heated up quickly, poor stopping power, and bad initial bite.
IIRC the 35i has the same brakes as the 30i, where the iS has the upgraded ones (well, by upgraded meaning same as a 335i).
if you want to properly track a Z4, a BBK is needed.