How many categories are there for tire ratings?
1 Answers
Tire ratings are divided into: load index and speed rating. The load index is molded on the sidewall, while the speed rating indicates the maximum speed a tire can carry a specified load under defined conditions. The load index is a numerical value corresponding to the maximum load capacity, showing the maximum weight a tire can bear under normal inflation. Typically, you might see markings like 91V or 85H on the tire model—the numbers 91 and 85 refer to the tire's load index, indicating the maximum weight the tire can support, while V and H denote the speed rating, representing the maximum speed the tire can handle. Precautions for using car tires: Regularly inspect the tire surface for cracks, deformations, or other defects. The tread grooves gradually wear down over time, and if they become too shallow, the tire will lose its ability to drain water and provide traction, significantly reducing the vehicle's performance. Even small cracks can pose a risk of blowouts at high speeds. Additionally, make sure to remove small stones stuck in the grooves. Avoid parking the vehicle on roads with large, sharp, or rough stones. Do not park near or in contact with petroleum products, acidic substances, or other materials that can deteriorate rubber. Drivers should avoid turning the steering wheel after parking, as this can accelerate tire wear. Tires are prone to overheating during prolonged or high-speed driving in summer, leading to increased air pressure. In such cases, park the vehicle to allow the tires to cool down. Never release air to reduce pressure or pour water to cool the tires, as this can cause abnormal aging of the tread rubber.
