I've been using this product for a while and gave my race wheels a long overdue clean. I'm might to hit them again as there's some really stuck grease and brake dust (thanks Ringers) but they've come up a treat after one use.
Before:
Attachment 1189 Attachment 1190Attachment 1191Attachment 1192
After:
Attachment 1193
Attachment 1194
Attachment 1195