Hub is like a car's "shoes", the perfect vehicle shape, if accompanied by a pair of very common "shoes", then the overall image will be greatly reduced, so equipped with a car do not ignore the wheel. The appearance of the wheel gives the visual impression is the first one, it is this seemingly careless place but just to show the owner's taste.
When the hub surface has a hard to remove stains, to choose a professional cleaning agent, this cleaning agent can often be mild and effective to remove stains, reduce the damage to the aluminum surface. In addition, the wheel itself has a layer of metal protective film, so care must be taken not to use paint brightener or other abrasive materials. Care must also be taken during driving to avoid scratching the "flawed" end of the hub. Once scratched or deformed, they should be repaired and repainted as soon as possible.
To avoid this phenomenon, the car should be diligent in the new rinse the rim, driving a vehicle every day at least once a week to wash the rim, rinse with water, and then use a sponge to scrub detergent, and then Rinse with plenty of water.
If the car has been driving for some time, usually not diligent in cleaning and maintenance, the rim has formed a layer of hard dark brown coking, it should be more powerful rim cleaner.
Cleaning coking to be patient, after spraying a special detergent, you must wait a while, let the solvent soften coking, and then sponge or rough cloth brush off, and then rinse with water.