Quite simply a mild detergent like fairy liquid and hot water with a clean sponge. You will be amazed at how easily the dirt lifts of our powder coated finishes. We do not recommend the use of alloy wheel cleaners as most of these are acid based and will in time attack and break down the lacquer coatings. There are many specially formulated wheel waxes available which you apply approximately every 6 weeks which will prevent any break dust and dirt sticking to your wheels. Always allow your wheels to cool down before cleaning them.