I like 215/75/15's up front on 15x6 and 275/60/15 rear on 15x8's (7's will work in a pinch) If you want a little more tread on the road you can go w/ 225/70/15's up front. Out back you can a big tire on a charger. I'd say even w/ the 275's you have an inch instide and out to play with.