With 17's, good luck finding tires over 275 in width. I think Kumho has a size or two above that. Pilot Sport PS2's have a 335/35-17 for $400 each, and that's about it just from Tirerack. The point being, there just aren't too many people making tire sizes in the widths we like to run on the back of our cars. If you do find a tire, you usually either pay a shitload of money for it or, like the Goodyear Supercar tires, they are really expensive AND they suck.