on the BBS: front 15" 7,5J ET 25,3 with 165/45 R15 Continental Rear 15" 8J ET 12,6 with 165/50 R15 Bridgtstone Poetnza on the Porsche's 15" 7,5J ET 52,5 with 165/50 R15 Bridgestone Potenza -Front 25mm spacer on the Porsche -Rear 35mm spacer on the Porsche