How deep should a tire sidewall cut be before replacement?

[ZoeyLee]

Here is relevant information on how deep a tire sidewall cut should be before replacement: 1. It is recommended to replace the tire if the sidewall cut is 4mm deep: Since the rubber thickness of a tire sidewall is often no more than 1cm, it is advisable to replace the tire when the sidewall cut reaches 4mm. 2. When the internal cord layer of the sidewall is damaged: If the cut is not severe and does not reach the cord layer of the tire, it can still be used even if it exceeds 4mm. However, if the internal cord layer of the sidewall is damaged, the tire should be replaced even if the cut is less than 4mm, as there is a risk of a blowout.