| There is a lot of info on this site about it. This was a common problem on early E46's and continues to be a problem for many people (including later models I believe). In fact BMW issued a TSB for the early models - see http://www.revbase.com/BBBMotor/TSb/...dPdf?id=138140. Searching will get you lots more help though.
Also, BMW's aren't special in whether or not you can have the rotors skimmed. If you are far enough above min. thickness, there is no problem having them lathed.
Last edited by lmr2wil; 09-02-2012 at 11:15 AM.