In addition to my "96 C4S, I have a nice low milage '98 BMW 540i. It is running on factory standard 16" wheels with 225/55/16's. Now is the time to take it to 18's and I am interested in a staggered arrangement (i.e. 18x8.5 front, 18x10 rear). The questions are will they fit, required offset and recommended tire size? Give me your best shot. Thanks

wheels:
18X8.5 ET15
18X9.5 ET20
tires:
235/40ZR18
265/35ZR18




you can search for available options here (http://www.tirerack.com/a.jsp?a=DY6&url=index.jsp)