Wow stuffed bearings after 20k miles, thats pretty brutal. I was pretty surprised at how rusty the hubs on my parts are. The bits came of an E93 M3 vert from NSW (had QLD plates)with 58k kms. Looks worse than my car that has over 130k kms
Are you upgrading your brake master cylinder to accommodate the M3 brakes? They have different part numbers and I read some thread that they might be due to the m3 master cylinder being higher pressure?
http://www.realoem.com/bmw/en/showpa...diagId=34_1483
http://www.realoem.com/bmw/en/showpa...diagId=34_1483