Quote:
Originally Posted by doogee
I think you're right. I think the M4 caliper bolts up!
Turns out the front calipers I have are from an M235i, which has a slightly different bolt pattern.
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On M235i you can not fit m4 rotors because M cars have different hub. You can fit F series performance rotors 370mm+m4 brake calipers. I think that setup is bolt on on F and E series.