To clean them safely, Gloss It Signature Wheel Gel offers incredible cleaning power, yet is pH neutral and safe for all surfaces. If bonded dust persists, it is sometimes necessary to step up to a weak acid solution, which will stain the rim, but this can then be polished out easily enough. For polishing, great advice above about being cautious in your approach. Our favoured products for this reason are Meguiars NXT Metal Polysh, Raceglaze Alutech and more recently, the Brillaitn range of polishes, which will soon be in stock. Finally, once they are back up to standard, be proactive and protect them - a cost of Blackfire All metal Seaalnt will provide bombproof protection for up to 4 months at a time, meaning only washing and drying will be required to keep them looking spot on.