What is the tread depth of car tires?

[DelAshley]

Tire tread depth standards are as follows: greater than 3.5mm indicates good condition, 2.5~3.5mm is normal condition, less than 2.5mm requires replacement, and the tread must be replaced when it reaches the limit value of 1.6mm. Below is some information about car tire tread depth: 1. National regulations: According to national standards, the wear limit for radial tires used in passenger cars is 1.6mm, while the wear limit for radial tires used in trucks and buses is 2.0mm. Therefore, when the tread of a passenger car wears down to 1.6mm, it must be replaced, and tires used in trucks and buses must be replaced when the tread depth reaches 2.0mm. 2. Inspection methods: Check using the tread wear indicators built into the tire; when the tread wear indicators are flush with the tread surface, the tire needs to be replaced. Alternatively, use a tire tread depth gauge to measure the tread depth.