What is the difference between 91V and 91H tires?
2 Answers
The difference between 91V and 91H tires lies in their maximum speed ratings: 91V tires have a maximum speed of 240 kilometers per hour, while 91H tires have a maximum speed of 210 kilometers per hour. Tires are crucial safety components that significantly impact various aspects of a vehicle's performance, including both comfort and handling. Tires are round, elastic rubber products mounted on metal rims, designed to support the vehicle's weight, absorb external shocks, maintain contact with the road surface, and ensure driving performance. They operate under complex and demanding conditions, enduring various deformations, loads, forces, and extreme temperatures during use. Therefore, tires must possess high load-bearing capacity, traction performance, and shock absorption capabilities.
As someone who frequently drives long distances, the most noticeable difference between 91V and 91H tires lies in their speed ratings. The '91' is the load index, meaning both can carry 615 kilograms, but 'V' indicates a maximum speed capability of 240 km/h, while 'H' is 210 km/h. This difference significantly impacts high-speed driving; since I often exceed speed limits on highways, choosing V-rated tires is safer to prevent overheating and blowouts. Lower-speed-rated tires like H-grade offer slightly less control during rapid acceleration or downhill driving, and while they may save a bit on fuel, safety comes first. When selecting tires, match them to your vehicle type and driving habits; older cars might suffice with H-rated tires and save a few hundred yuan, but new performance cars should opt for V-rated. Always check the markings when changing tires to ensure consistency and avoid mixing, which can cause imbalance issues. Safe driving is the ultimate priority.
