From my experience the best way to clean the wheels is with some carwash and water in a bucket. I like to use a big sponge, but a soft bristle brush would work just fine,
HTH
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Chris
'99 Tropic Green SVT
KKM, No-res, TH-Fix
B&M Edge Short-Shifter
New style cupholders
Rev. lockout disabled
Pioneer sound system
http://albums.photopoint.com/j/AlbumIndex?u=974837&a=7152412