i run 225/45/17 potenza re730's on 17x8 sparcos. they hook like leeches. 225s on 17x7 will be jsut fine.. just as long as your rims are atleast about 80% of the tread. 215's on 17x7 are 82.6977% of a 215 tire.... 17x7s are 79.0222% of a 225inch tread.. i THINK 80-92/94% is ideal, but 79 is close enough... mine is 90.3111% (8inch rims w/225)

2GNT Member #76, since Fall 1999

Drives: 2004 Mazda RX-8
Drove: 1999 Saab 9-5 SE
1999 Eclipse GS Hahn Stage 1