I recently upgraded my brakes with Stoptech ST60 front/ST40 rear on an E39 M5. Stock brakes weren't cutting it on track days. Took off the winter wheels and the stock wheels do not clear the calipers on the rear. There's contact between the barrel of the wheel and the ends of the calipers. Can anyone suggest some lightweight, good looking replacement wheels? Has anyone combined ST60 front ST22 rear and how has that worked. Thanks.