I spent two halfs days this week cleaning the wheels and calipers on my new baby. I can't believe that any Challenger owner worth their salt would let the wheels get that bad! It took lots of elbow grease, and rubbing compound to get all the spots and discoloration off of the black on the SRT wheels. But, now, I am satisfied for the time being. As, I had some curb rash on the passenger side, that my Dremmel smoothed out fairly nicely.