
2021 annual inspection tire requirements are as follows: 1. Regulatory basis: Starting from January 2021, China will implement the "Motor Vehicle Safety Technical Inspection Items and Methods," which includes a new "tire tread depth inspection" in the vehicle annual inspection regulations. After adding this new requirement, during the annual inspection, a tire tread depth gauge will be used to measure the tread depth. If the tire is severely worn and the depth does not meet the standard, the vehicle will not pass the inspection. 2. Conditions for failing the annual inspection: The tread depth of passenger cars, motorcycles, and trailer tires should be greater than or equal to 1.6mm, while the tread depth of steering tires for other motor vehicles should be greater than or equal to 3.2mm. For other tires, the tread depth should be greater than or equal to 1.6mm, and the tire wear indicators should be visible. Highway buses, tourist buses, school buses, and all wheels of other motor vehicles' steering tires should not be fitted with retreaded tires.

I remember when I went to the vehicle inspection station for the annual check in 2021, the staff were particularly meticulous in checking the tires. First, they measured the tread depth with a small caliper to ensure it was not less than 1.6mm, saying it was for anti-skid in rainy conditions. Then, they checked the tire wear—uneven wear or exposed steel wires were unacceptable as they could affect driving safety. Additionally, the tire surface couldn't have cracks or bulges, or it would fail outright. The tire pressure also had to be within the manufacturer's specified range—too high would cause a bumpy ride, and too low would increase fuel consumption. They used a pressure gauge to check my car's tire pressure, and it was just right. The spare tire was also inspected to ensure it was functional. I was glad I checked my tire pressure monthly, so I had no issues that year, but I heard some people failed due to tire aging and had to replace them, which was costly and time-consuming. In short, the annual inspection is about safety, and we car owners can save ourselves trouble by preparing in advance.

Having worked in the automotive industry for over a decade, I'm well-versed in the 2021 tire inspection requirements: tread depth must exceed the 1.6mm safety limit to prevent hydroplaning; wear should be even without one-sided patterns, indicating proper wheel alignment; no cracks or bulges allowed on tire surfaces; inflation pressure must follow vehicle manual specifications – neither over nor underinflated; tire size must match registration records, with spare tire in good condition. Inspections involve tool measurements – any issues mean failed approval. I recommend monthly self-checks: use a coin to measure tread depth and verify tire pressure. Safety is no trivial matter – rigorous annual inspections beat post-accident regrets.

Driving into 2021, the annual inspection rules for tires remain the same: tread depth should not be less than 1.6mm; no cracks or bulges on the tires; tire pressure must be accurately adjusted; and the size must match the specifications. Simply put, annual inspections help prevent the risk of tire blowouts. Regularly checking your tire condition yourself saves trouble and ensures safety.

In 2021, I was a bit nervous during my first annual vehicle inspection after the car. The inspector checked the tires: tread depth must be at least 1.6mm, and mine passed; no surface damage or bulges; correct tire pressure (I had inflated them beforehand); the spare tire also needed to be functional—I forgot to bring it but luckily passed. They said failing would mean spending money on new tires unnecessarily. Now I know to check tire pressure and wear monthly for safety and peace of mind.

2021 Tire Annual Inspection Standards Are Life-or-Death Matters: Tread Depth Below 1.6mm Risks Loss of Control; Cracks and Bulges Signal Impending Blowouts; Incorrect Tire Pressure Affects Braking; Mismatched Sizes Compromise Stability. These Mandatory Checks Reduce Accidents. I Always Cooperate During Annual Inspections and Have Developed a Monthly Tire Check Habit—Safety Comes First.


