QUOTE (atakacs @ Jan 8 2007, 12:50 AM)

I wouldn't need spacers for an 02 WS6, right?
Almost all commercially available 17x9.5 wheels have too much offset for a 4th gen, typically 56mm like Rob's wheels. They'll work fine for street driving, but with race tires you may get some rubbing on the rear inner fenders in a hard corner.
That's partly because race tires run wide, and partly because of "roll steer" of the rear axle. Race tires have more grip than street tires, so you'll get more roll when cornering at the limit (and thus more roll steer).
You can run the wheels without spacers, but you'll get less rubbing with a 1/8" to 1/4" rear spacer. I know Rob used a spacer, but don't remember the size. You can leave the spacers in with your street wheels too, in most cases.
Like I said, the situation is the same with most wheels out there. They are really designed for Corvettes (later C4 or C5 Z06). The exception is a $2K+ set of custom Forgelines or CCWs.