Originally Posted by Ceeker
I recently found that out actually. :-) one needs the m3 rear bearings but I think the backing plates might be the same. unless, the m3 5 lug rotor is required for it to work? then I would think yes?
I used standard bearings with the m3 hubs, they're the same as non-M, as long as we're talking e30 stuff all around. I think the backing plates may be larger but I don't know if they're really needed.
You might have to trim them for the slightly larger rear calipers if you don't have to for the slightly larger rear rotors, but I think they're different. I really should have compared everything to the stock 4 bolt stuff when I swapped.