Here are a couple of pics from SoCal Mike, on rennlist. Hope he doesn't mind me hijaking these:
You can see that the wheels look like they have the right proportion. I feel that even the 16" fuchs wheels look a bit too small in the center. Almost as if Porsche used the 15" center dimensions and added 16" hoops! It only gets worst when you bump the outside to 17's. Lindsey should be able to sandwich the wheels like this too, I would imagine.
Do you have any street wheels now, or just the Kinesis track ones?
-Garen (87 930)