The ABS rings on the E30 axles are a larger diameter than the stock ti rings. You have to shim out the rear ABS sensors so they clear the rings but still read correctly. There are threads that talk about it. __________________ ~Dave~ 98 328ti Morea Grun slicktop 11 128i space gray slicktop 13 JGC WK2 Deep Cherry Search | RealOEM |