questions about wheel spacers. Just bought a 2002 allroad, looks like it takes a center bore of 57.1mm and an offset of 25mm. Would I be foolish to purchase wheels of a 2013 A6 ( 66.6mm center and 39mm offset)? I know I would need a set of 15 or 20mm spacers but is it a mistake to screw with both offset and center bore that is not meant for your car?