How deep a sidewall cut requires tire replacement?

[OCarson]

Tire sidewall cuts ≥3mm are recommended for replacement. Below is detailed information about tire cuts: 1. It's necessary to check whether the cut has damaged the internal cord layer of the tire. If the sidewall is already damaged and the cord layer is affected, replacement is required. If the cut hasn't reached the cord layer, the tire can continue to be used, but regular inspection is needed to monitor whether the damage expands to the cords. If the cut extends to the cord layer position, replace the tire promptly. 2. A sidewall cut with 4mm depth must be replaced. Because the rubber thickness on tire sidewalls often doesn't exceed 1cm. Once this part is damaged, the entire tire structure becomes compromised, and the tire could potentially blow out at any time.