Can Plastic Scratches on Wheel Arches Be Repaired?

[MacCecilia]

Yes, they can be repaired through gray polishing or grinding and polishing. Here are the relevant details: 1. Grinding and Polishing: Grinding and polishing involves smoothing the rough surface of plastic products. The polishing material can be processed using fine silicon dioxide powder of around 300 mesh. For transparent plastic products with low hardness, such as organic glass or polystyrene, an appropriate amount of green oil can be added to the material. If the surface requirements are not high, cleaning and drying after gray polishing or grinding and polishing can complete the process. 2. Wheel Arch: Wheel arch, short for car wheel arch, refers to the chrome trim along the upper edge of the tire, which is the semi-circular component protruding from the fender above the car tire.

[Quintero]

I often do car maintenance myself, and scratches on plastic wheel arches can usually be repaired, depending on their depth. For superficial white scratches, using a plastic restorer or a heat gun can restore the surface—just remember to apply a protective oil afterward. If the scratch is deep enough to feel a dent, you’ll need to fill it with a plastic welding pen and then sand it smooth. If all else fails, just replace the wheel arch cover—it’s held by screws and takes about half an hour to remove and install. Avoid using stiff brushes on the wheel arches and keep the pressure washer at a safe distance during car washes to minimize the risk of scratches.

[SanAmy]

As someone who runs an auto repair shop, I've dealt with numerous wheel arch scratch issues. The process generally involves three steps: first, sand down the edges of the scratch with sandpaper, then fill the gap with specialized plastic filler paste, and finally spray color-matched paint to restore the factory finish. For deep scratches, epoxy resin reinforcement is needed to prevent cracking. The key is not to delay repairs too long, as aged plastic becomes much harder to fix. Some older cars develop brittle, whitened wheel arches - in such cases, the only solution is complete replacement of the part, which typically costs around a hundred bucks.

[ZoeFitz]

Last time my wheel arch got scratched by a tree branch, I immediately went to the auto parts market for a solution. The technician recommended a plastic scratch repair paste, which cost just over ten yuan per tube. The coverage effect after application was really good. In fact, as long as the internal structure isn't damaged, those minor surface scratches can be completely fixed by yourself. I always keep a black repair pen handy for touch-ups, which also helps prevent the plastic from oxidizing and turning white. Remember, the sooner you deal with scratches, the easier it is. If left too long, dust can seep in and make them much harder to clean.

[DeBrantley]

Having been in the car detailing business for over a decade, wheel arch scratch repair is a routine service. The required tools are minimal: a heat gun, sanding block, and plastic primer are sufficient. Technique matters more than tools—the heating temperature must be kept below 180°C to avoid plastic deformation. When painting, apply multiple thin coats for better adhesion and color retention. The newly introduced nano-coating liquid is also excellent; it forms a protective layer after spraying, far more durable than waxing.

[DeKaden]

When I first got my new car, I was particularly concerned about scratches on the wheel arches. Later, I realized that the black plastic parts are actually quite durable. Minor scratches can be wiped away with an eraser, and deeper ones can be restored by about 70-80% using a hairdryer to heat them up and then wiping with a cotton cloth. Regularly spraying some tire gloss can prevent new scratches, as it nourishes the plastic and provides UV protection. If the repair doesn't turn out well, don't stress too much—after all, these areas near the tires aren't very noticeable, and replacing the parts after a few years is a more hassle-free solution.