What does 91h on a tire mean?
4 Answers
91h on a tire indicates that the tire has a maximum load capacity of 615Kg and can withstand a maximum speed of 210KM/h under the specified load. More information about car tires is as follows: 1. Whether it's the speed rating or load index, it's essential to drive within the specified limits during daily use to avoid significant safety hazards; 2. When replacing tires, it's also important not to mix tires of different types, models, or structures; 3. Car tires are one of the critical components of a vehicle, directly contacting the road surface and working with the suspension system to absorb shocks during driving, ensuring good ride comfort and smoothness. They also ensure excellent adhesion between the wheels and the road, thereby improving the vehicle's traction, braking, and off-road capabilities.
The 91H marking on the tire indicates that 91 refers to the load index, specifically corresponding to a maximum load capacity of 615 kilograms. This number ensures the tire can bear the weight of both the vehicle and cargo. If the tire is too weak or overloaded, it may easily burst or wear out too quickly during driving. H represents the speed rating, with a maximum speed capability of 210 kilometers per hour, which relates to safety during high-speed driving as excessive speed can cause the tire to overheat and deform. I recommend checking the vehicle's manual every time you change tires to ensure 91H matches your car's weight and driving habits—don’t just install any cheap tire. Additionally, regularly inspect tire wear conditions, such as tread depth, as routine maintenance can prevent unexpected incidents.
The 91H tire code is quite interesting. The 91 means it can handle a load of 615 kilograms. As someone who loves tinkering with car parts, understanding this load index is crucial, especially if you frequently carry passengers or haul goods. Exceeding the limit can cause the tire to bulge or burst. The H stands for a speed rating of 210 km/h. I've driven at 190 km/h on the highway, and the tires remained stable, but never use the wrong speed rating—don't cheap out and pick a lower one when replacing tires. I also recommend learning about other speed ratings, like V for 240 km/h and T for 190 km/h, as the differences significantly affect handling and fuel efficiency. Regularly check tire pressure and balance to extend their lifespan.
When commuting to work by car, I always pay attention to the 91H marking on the tires. The number 91 indicates that the tire can bear a maximum load of approximately 615 kilograms. If the car is too heavy, the tires may not hold up, making them more prone to issues when going uphill, downhill, or during sudden braking. The letter H represents the speed rating, with a maximum of 210 km/h. Driving too fast on highways can cause the tire temperature to rise, reducing stability. I think the practical approach is to check your car's manual to ensure the 91H rating matches, and not overlook this when replacing tires. By the way, tire specifications like the size 195/65R15 should also be checked for added safety.
