What does 91h on a tire mean?
2 Answers
Tire 91h indicates that the maximum load capacity of a single tire is 615Kg, and the maximum speed it can withstand under the specified load is 210KM/h. Here are the relevant details: 1. 91 is called the load index, and the maximum load capacity of 615Kg can be determined by referring to the tire load index chart. 2. H is called the speed rating. Additional information: Whether it's the speed rating or the load index, during daily driving, you should operate within the specified limits of the speed rating or load index. Otherwise, there could be significant safety hazards. Additionally, when replacing tires, it's important to note that you should not mix tires of different types, models, or tire structures.
I've seen many people overlook those small numbers when buying tires, but 91H is actually quite important. 91 is the tire's load index, indicating each tire can bear 615 kilograms. If your car is heavy or you often carry loads, you must choose a sufficiently high index; otherwise, the tires may wear out prematurely or even burst. H is the speed rating, meaning the tire can safely travel up to 210 kilometers per hour, which is especially crucial when driving on highways. I believe choosing tires isn't just about the brand; they must also match the vehicle's manual recommendations. For example, an SUV might need a higher load index. Tire lifespan also affects performance—regularly checking air pressure and wear levels can extend usage, making it worry-free and safe. On rainy or slippery roads, the correct load ensures grip and prevents skidding.
