What is the replacement standard for sidewall scratches on tires?

[SanJulianna]

≤2mm can be used, ≥3mm·recommended replacement. Tire maintenance methods include: 1. Perform wheel alignment and tire rotation: Conduct wheel alignment and tire rotation every 10,000 kilometers. 2. Regularly check tire pressure: Tire maintenance also includes regular pressure checks. Tires exceeding the specified pressure will significantly reduce their service life, while tires below the specified pressure may lead to poor braking performance, difficulty in steering, or heavy steering, and will also shorten the tire's lifespan. 3. Regularly inspect tire conditions: Frequently check tires to promptly detect issues such as bulges, cracks, cuts, punctures, valve rubber aging, and abnormal tire wear. Pay special attention to inspecting the wear on the tire tread and edges.

[SophieLynn]

Last time I had a big gash on my tire sidewall, the mechanic at the repair shop carefully inspected it and said the replacement criteria for sidewall damage depend on depth and exposure. If the cut is deep enough to expose the cord fibers, or if the wound is excessively wide/long or even bulging, then the tire must be replaced immediately. Minor shallow scratches might be monitored for a while, but they pose too much risk at high speeds—especially since the sidewall is the most vulnerable part and prone to blowouts under stress. I learned a handy trick: gently probe the depth with a finger or use water to check if light passes through the crack for easy self-inspection. My advice is don’t gamble with safety; get a professional evaluation and replace it early. After all, safety comes first—only a stable ride brings peace of mind on the road.

[McVanessa]

With years of experience in handling tire issues, I strictly adhere to the replacement criteria for sidewall cuts. The general rule is: replace the tire if the cut depth exceeds half of the tread depth or clearly exposes the cord material. The risk multiplies if there's bulging or the cut length exceeds 2 cm. I advise car owners to regularly inspect cuts visually and by touch to assess depth—don't delay if in doubt. At high speeds, sidewall damage can lead to dangerous blowouts and loss of control. Developing habits like checking tire pressure and appearance can prevent problems. When uncertain, replacing the tire is the safest choice—don't compromise safety to save small costs.

[VanLydia]

When the sidewall of a tire is scratched, the core criterion for replacement is safety. If the scratch is deep, exposes the cords, or causes a bulge, it must be replaced immediately. Minor scratches can be monitored temporarily, but they carry the risk of further damage. During high-speed driving, a weakened sidewall may lead to a blowout, endangering driving safety. I emphasize the importance of regularly checking tire conditions and seeking professional inspection if any damage is found. Avoid taking chances—replace the tire at the first sign of doubt, as safety should always come first.