What are the requirements for tire tread patterns during annual inspection?

[AlexaMarie]

Left and right tires must have the same tread patterns. In addition, the annual inspection also requires that tires must not be excessively worn, as excessively worn tires pose safety hazards. The details are as follows: 1. Specific requirements: The annual inspection has not abolished the requirement for uniform tire tread patterns. It mandates that all four tires must have consistent tread patterns or at least the same tread patterns on the same axle, meaning the front two tires can be the same and the rear two can be the same, but left and right tires cannot differ. 2. Hazards of inconsistent tread patterns: If left and right tires have different tread patterns, it will affect the smoothness of the vehicle's movement. During emergency braking, it may cause unilateral skidding or fishtailing, posing driving safety hazards and resulting in failure of the annual inspection.

[ErinLee]

As a seasoned driver, I must tell you that the annual inspection has strict requirements for tire tread. The main point is that the tread depth must not be less than 1.6 millimeters, otherwise it will be directly disqualified. During the inspection, they use a depth gauge to measure the central grooves of each tire, which must be consistent and even. If the tread is too shallow, the drainage performance becomes poor, making it easy to skid or cause accidents in rainy weather, which is very dangerous. I personally test my tires every six months using an old coin: insert it into the tread, and if the edge line is still visible, it's time to replace the tires immediately. Additionally, uneven wear or cracks will also fail the inspection, often caused by improper tire pressure or sudden braking. Check more during maintenance to avoid a wasted trip to the inspection station.

[VonAlaina]

During tire inspections, tread depth is a key check item, requiring at least 1.6mm. You can measure it with a specialized depth gauge or simply use a coin—for example, insert a one-yuan coin; if the tread doesn't cover the numeral part, it's time for replacement. Also, pay attention to tread uniformity—localized bald spots or uneven wear indicate failure, possibly signaling frame issues. Insufficient depth compromises grip, especially during high-speed sharp turns, increasing the risk of losing control. Annual tire rotation is recommended to extend lifespan. These regulations prioritize driver safety—never compromise them to save costs.

[DelSimon]

Annual inspection requires a minimum tread depth of 1.6mm. Insufficient tread depth reduces wet weather drainage and increases hydroplaning risk. Use a gauge to measure central groove depth during inspection. Replace tires when wear indicators become visible. Conduct regular visual checks for cracks or damage. Safety first.