WD40 on rubber is not a good idea, it makes it shine, but eats it.
On good clean wheels, the brake dust don't stick much.
I've polished mine with a very soft polishing compound, and they are very easy to clean with dish soap and hot water.
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ASE certified Automotive Master Technician.
Porsche Tech in France.
www.benautodesign.fr
Ben-Auto-Design : Performance parts for 9X6 / 9X7
1982 928 S Euro
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