Quote:
Originally Posted by AusF20
Sorry to burst the bubble a little here, I am informed that the diameter of the disc is the same on the front, slightly larger than the M Sports on the rear and the pistons are larger in the BMW performance units.
They are Inner-vented, lighter weight discs for more extreme driving and higher thermal factors.
They are Four-piston aluminium caliper on the front axle, two-piston aluminium caliper on the rear axle.
Available in M Performance Red, M Performance Yellow or M Performance Orange. Includes coloured M logo.
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AusF20, I am not sure who gave you that information, but I am 110% sure it is wrong information.
I just double check the standard one on my 118 and M Brake on 125 (sitting side by side). They are much bigger on the M version.
For the standard 118, there is a BIG gaps between the disc & rim, but the M version is filling up the entire rim for a 17" rim.
It's too dark now, but I will try to get some photo tomorrow for comparison.