There are two options for the front. The 9.5 inch 19' ET26 should not have any rubbing issues at all, it's virtually identical to the APEX wheels for the M2C. Particularly on stock tires as they will be very stretched. The ET 23 would also be perfect for track wheels as they will clear the suspension perch on aftermarket coils (its effectively the same as running the ET28 Apex wheel with a 5MM spacer which they recommend on some applications).
The rears appear more troublesome at ET35 (Apex is ET40) but I think you can get away with it, particularly if you are running stock sizes.
This guy is running the aggressive offsets on his M2C and they look fantastic, I copied one pic which shows the offsets on the car but this thread has a ton of pics. Looks like he's running 255/275.
https://f87.bimmerpost.com/forums/sh....php?t=1712677
If I need another set of wheels, it will be be between these and HRE FF11.