What is the replacement standard for tire sidewall scratches?

[DiAlice]

Tire sidewall scratches with a depth of ≤2mm can still be used, while those ≥3mm should be replaced. There are three key points for handling car tire issues: 1. Wear: Regularly inspect all tires, including the spare, every month. During inspection, check the tire surface for cracks or scratches, and use gloves to examine the inner side for any suspicious marks. 2. Premature wear in the center: This is mainly caused by overinflation. While slightly increasing tire pressure can reduce rolling resistance and save fuel, excessive inflation affects shock absorption and causes excessive deformation, reducing contact area with the ground and leading to premature wear concentrated in the center. 3. Blowouts: Besides spontaneous combustion, summer heat can easily cause tire blowouts. Main causes include: failure to perform safety checks before trips, existing damage to sidewalls or tread belts, blowouts during high-speed driving; severely worn tread patterns not replaced in time; and external impacts during driving causing blowouts.