3pcs wheels are expensive, you can try to sell your old lips to re-cover some costs.
What you can fit depends on what you mean by "comfortably".
17x9s with 235 or maybe 245s all around should be do-able, depending on the offset.
If it's a lower offset you'll have to run 225s or 215s, but you'll have some stretch.
Last edited by T.Dot_E30; 03-21-2012 at 04:02 PM.