Just a couple notes based on my research...
1) 17" clears anything bellow 325mm; 16" rims clear anything below 300mm; 15" clear anything below 286mm
2) for what it matters it's only the 323 sedan that has 286 front rotors; all other 323s (convertible, coupe, and touring) have 300mm front rotors
3) the 286mm vented and 300mm vented use the same caliper, but different caliper carriers
4) 286mm solid, 286mm vented, and 300mm vented use the same pads
5) I think that no rear brakes are compatible with the 318ti/Z3 hub; you can swap in the ///M roadster/coupe rotors, but it requires replacing the wheel hub; I was told, but never confirmed, that E46 rear bares would fit if the parking brake shoes are removed (I can't confirm nor deny this).
7) I'm not sure that rotors will actually be swappable between models as the hub/offset might be different. For example, although the Z4 2.5 and the Z3 2.3/2.5i/2.8 used the same calipers & carriers for the 286mm setting, the rotors p/n for the Z4 is different form the Z3...
8) If I may suggest, I would actually reverse the chart in the sense of putting the rotor size as title and the compatible models below. __________________ 
2003 Z4 2.5i
2002 Ducati Monster S4 |