I will throw in my 2 cents on this issue for you to think about.

I have 18x8's on my 95 Eagle Talon. The tires are 225/40/18 and they are really expensive. If you want the cheapest (and still not too shabby) tires they are at least going to cost you $110 a piece. It only goes WAY WAY WAY up if you try and get winter tires or big name brands.

225/40 is as big as you can go w/o rubbing. I have absolutely no rubbing at all. The problem with all this is that the tires are so little and soft that they def. don't last as long. To tell you what.. after having 18s for a while.. I would have rather got 17s. The tires are much cheaper.. and they are easier to find and replace if you are in sudden need of a new tire or two.

I do enjoy my 18's though.. they look great and you don't even feel bumps in the road at all. However, they do come at a price!