Silver 2000 Ram Air

iTrader: (32)

Picked up a set of wheels in vette fitment. 17x9.5 (51 offset) and 18x10.5 (57 offset). Wondering what is best tire to run on these, I would like a sticky tire in rear, not a daily. I'm pretty sure I want a 275/40/17 in front. I'm confused on rear though. Would it look weird to have a 315/30/18 in rear with the 40/30 profile difference between the 2 (if I could even fit a 315/30/18)?

I'm lowered, currently on 315/35/17 and pro kit springs, so I have massaged the fender wells a bit already.