The stock wheel is et-35. I *think* the S4 5 spoke 16" wheel fits over the UFO, but I'm not certain. I seem to recall a lister using a set on a '91 200q. Please let me know if you get a definitive answer. What I'd really like is the S6 Avus wheel, but since I can't afford a set I guess it doesn't matter if they fit :-( Kerry '91 200q 99.5 A4q