Does a cut on the outer tire need to be replaced?

[DelRiley]

Whether a cut on the outer tire needs replacement depends on the specific situation: 1. Tire sidewall cut: If the tire sidewall is damaged, the tire must be replaced as soon as possible to avoid the danger of a high-speed blowout. Although damage is not easily encountered, once it occurs, replacement is generally necessary. Therefore, car owners should be cautious to prevent sidewall damage during daily use. 2. Deep outer tire damage: If the contact surface damage exceeds 4mm, the tire must also be replaced as soon as possible, as both internal and external repairs pose potential risks. Note: Pay special attention to protecting the tire sidewall when going up curbs or over road edges. Avoid not only frontal collisions but also side scrapes, as side impacts are more damaging to the tire than frontal ones.