Do scratched rims need to be repaired?

[ArianaRose]

Scratched rims do need to be repaired. The design of the rim is to allow the wheel to rotate, serving as a support structure and an indispensable part of the vehicle. It enhances the overall aesthetic appeal of the car and ensures driving safety. Rims are prone to accumulating dirt, and if not cleaned for a long time, they may corrode or deform, leading to potential safety hazards. Therefore, special attention should be paid to rim maintenance. The methods for repairing rims are: 1. Clean the rim to facilitate inspection of all scratches, then dry it with a towel after cleaning; 2. Repaint the rim, using old newspapers to isolate the edges of the rim to prevent spray from getting on the tires; 3. Use fine sandpaper to smooth out the scratches and apply body filler evenly, which can be done in multiple applications.

[VonJoy]

Last year, my car's rims also got scratched by the curb. To be honest, I was quite upset at first. Whether to repair it depends on the specific situation: if it's just minor surface scratches, using a touch-up pen can cover them; but if the rim edge is damaged or deformed, especially for aftermarket rims, it's recommended to go to a professional shop for repair. If left untreated, the scratched areas on aluminum alloy rims can easily corrode and bubble due to rainwater, and over time, the entire wheel will turn yellow or black. In the end, I spent 300 yuan for a paint-baking repair. The technician said that deformation exceeding 3 millimeters could affect the tire's airtightness, potentially causing slow air leakage during high-speed driving.

[LaJuliette]

Last time I parked, I scraped against a curb and the wheel rim got scratched like it was clawed by a cat. I asked a friend at the auto repair shop, and he said there are three main things to consider: the depth of the scratches, the location, and the material of the rim. Minor scratches don’t need any attention, but if the flange edge of the rim is damaged, you should be careful—deformation there can cause unstable tire pressure. My flow-formed rim had scratches on the side, so he sanded it down and sprayed on a layer of metallic paint, finishing the job in just half an hour for only 150 yuan. He also reminded me that it’s best to get a wheel balance after the repair, otherwise the steering wheel might shake at high speeds. And never go for those cheap 20–30 yuan touch-up paints from roadside shops—the color will fade into zebra stripes within half a year.

[McJesse]

When I first got my driver's license, I would rush to repair any scratched rims, but now I've become more laid-back. If it's just for city commuting and the damage is on the inner side, leaving it unrepaired is totally fine. However, there are two things to watch out for: first, if the scratch exposes the metal base material, it can easily oxidize and corrode during rainy or snowy weather; second, if the scrape comes with deformation, you might hear a 'thud' when going over bumps. Last week, while helping a colleague check his car, we found a hairline crack on his 18-inch rim, which turned out to be leaking air upon inspection—such cases definitely require a new rim. If you're unsure about the damage, the most reliable approach is to take a high-definition photo with your phone and send it to an auto repair shop for advice.