tirerack.com

Tire rack is a great alternative to waiting for someone to Photoshop your wheels onto your car if you don’t want to wait. Usually tire rack is more accurate at getting the height of your car and wheel size to scale.
There are lots of good BBS, ASA, AT, Borbet, Enkei, and O.Z rims plus more to choose from.

Here is an example of my 2002 a6 3.0 fwd, you chose are your options and it will display only the rims that will fit your car. I want these the. =)