Try the Mothers' wheel polish that is made for "clear coated" wheels. I have used it on my 97SE's wheels and it removed all of the stains. Mothers' regular polish might be to abasive for your aplication.

K&N filtercharger
Dunlop SP5000 Tires
Katz Fogs
Piaa lows
ST200 Struts
Roush Springs
Driven mainly by my wife, now. DAMN!!