Hadn't used the P21S Gel wheel cleaner in a while and after much rain the Carrera five spokes were filthy. I pulled into the wash-it-yourself coin operated bay and while I waited for my turn I went to the trunk and pullled out the P21s and sprayed all four wheels spreading the gel with a sponge. I also used some on the tires and scrubbed it in with my Meguiar's Gold Class tire brush.
Rinsed off the gel and it the wheels were *CLEAN* as I have ever seen with such little effort. I had to get the long brush out to clean the barrell of the wheel but that didn't take long at all. Dryed the wheels and applied a quick coat of NXT and 1Z on the tires (stuff rocks, nice dark matte finish). Went my usual over board by applying the Michelin Brake Dust Repellent on the front wheels only.
Anyhoo. I really have been taking this P21S for granted. During the winter months I'm going to use it with every wash. Winter is murder on pain finishes.
general info on wheel care:
http://www.guidetodetailing.com/articles.php?articleId=8