I run 245/60's on 7" steelies in back on mine. Look pretty good, and not even close to rubbing with stock springs. If an aggressive look is what you're going for, I'd go with a 255/60 on the 7" rims out back. Then balance that with a 215/70 on a 6" rim in front (very close in Ht., but the extra width in both the tire and rim out back will provide a nice stance).