I just ordered a set of Nitto 555 Extreme ZR-Rated tires for my new 17x7" wheels. They are a 235/45/17 size tire. $510 shipped with valve stems from www.tires.com. 8)
You're going to have to let us know how those work out. They are one of the tires I'm considering when it comes time to replace mine. Is $510 a good price? You don't see Nitto's around that often so I have nothing to compare that price to.
Mike
If you go to www.tires.com and click on tires, then yor car, then you can click the tire size you want from stock upto plus sizing them to the 18s. Then it'll pull up all the tires in that size. The nittos where placed between Kumho's and Falken's.