When there are stains that are difficult to remove on the surface of the wheel hub, a professional cleaning agent should be selected. This cleaning agent can often remove the stains gently and effectively and reduce the damage to the aluminum alloy surface. In addition, the wheel hub itself has a metal protective film, so be careful not to use paint brightener or other abrasive materials when cleaning. Also be careful during driving to avoid "hard injuries" caused by scratches on the wheels. Once there are scratches or deformations, they should be repaired and repainted as soon as possible. So how to repair the scratches? There are six specific steps for repairing: the first step is to check the scratches. If there is no damage to the inside of the wheel hub, you can simply repair it. Use paint thinner to wipe around the scratches to remove dirt; In the second step, it is difficult to remove the dirt on the deepest part of the scratch. You can use a toothpick to clean it thoroughly; the third step: to prevent accidentally painting the irrelevant part, carefully stick the adhesive tape around the scar; the fourth step, Arrange the tip of the brush and apply finishing paint. In the fifth step, after painting, after it is completely dry, use water-resistant paper dipped in soapy water and smear it to make the surface smooth; in the sixth step, after wiping with water-resistant paper, wipe out the light with the mixture, and then apply wax. If you encounter a deep scar, the key is to observe whether the metal surface is exposed. If the metal surface is not visible, it will not rust. You can concentrate on applying the finishing paint. Use the tip of the pen to go up little by little, and then wait for the paint to dry completely. To avoid such a phenomenon, the car should be diligent to wash the rims at the beginning of use. Every day, the car should be washed at least once a week, first rinse with clean water, and then use detergent to sponge scrub. , And then rinse with plenty of water. Daily maintenance is also indispensable. When the temperature of the wheel hub is high, it should be allowed to cool down before cleaning. Never use cold water to clean it; otherwise, the aluminum alloy wheel hub will be damaged or even the brake disc will be deformed. And affect the braking effect. In addition, cleaning the aluminum alloy wheels with detergent at high temperatures will cause chemical reactions on the surface of the wheels, loss of luster, and affect the appearance. When the wheel hub is stained with tar that is difficult to remove, if the general cleaning agent does not help, you can try to remove it with a brush, but do not use a brush that is too hard, especially an iron brush, to avoid damage to the surface of the hub.