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      01-21-2017, 02:23 AM   #6
GuidoK's Avatar

Drives: Z4 3.0i ESS TS2+
Join Date: Jul 2012
Location: Tinkering in the garage

iTrader: (0)

If the caliper fits the stock rotor, it will also fit the z4m rotor. Offset is the same afaik.
For the 330i there is even an official perforated rotor upgrade which is basically a z4m/m3 rotor but in 325mm dimension (but with the same aluminium hat and thus offset etc):
Needless to say this rotor also fits the z4 3.0si stock setup.

The big problems are at the rear where the z4 has a big offset and the smaller parking brake shoes (160mm), so no other rotor/caliper assemblys work unless heavily modified.
Z4 3.0i | ESS TS2+ | Quaife ATB LSD | Brembo/BMW performance BBK front/rear | Schrick FI cams | Schmiedmann headers+cats | Powerflex/strongflex PU bushings | Vibra-technics engine mounts | H&R anti rollbars | KW V3 coilovers | Sachs performance clutch