What does 91h on a tire mean?
2 Answers
91h tire means the maximum load capacity of the tire is 615Kg, and the maximum speed it can withstand under specified load is 210KM per hour. The following are precautions regarding car tires: 1. During daily use of the vehicle, always drive within the speed rating or load index specified limits. 2. Do not mix tires of different types, models, or carcass structures. Extended information: Car tires are one of the important components of a vehicle, directly in contact with the road surface. Together with the car suspension, they help to mitigate the impact during driving, ensuring good ride comfort and smooth driving. They also ensure good adhesion between the wheels and the road surface, thereby improving the vehicle's traction, braking, and passability.
I often notice combinations of numbers and letters on my tires while driving, such as 91H, which are actually part of the tire specifications. The number 91 represents the load index, indicating that this tire can safely bear a maximum weight of about 615 kilograms. This is crucial for vehicle loading—if you frequently carry a full load of passengers or cargo, make sure not to exceed this limit. The letter H is the speed rating, showing that the tire's designed maximum speed is 210 kilometers per hour. Avoid exceeding this speed during high-speed driving to prevent overheating and tire blowouts. When selecting tires, it's best to match the original factory specifications. You can refer to the car manual or consult a mechanic to ensure both safety and extended tire life. Regularly checking tire pressure and wear condition before driving can also help prevent unexpected issues.
