hi everyone..i need some advice..i have a 2005 x5 4.4 prem/sport package..i just bought a used set of 18 inch oem rims and tires from ebay..they are 18 x 8.5...i just saw on ebay that a set of oem 18's for 2000-2006 have 2 8.5j inch for front and 2 9.5j inch for rear and i also saw a oem set for 2000-2006 with 9.5j for all four..mine are 8.5j all around..can anybody explain why this situation are mine ok or should the rears be 9.5j inch..thanks for help and merry christmas to all...thanks rob