What is the difference between 91V and 91H tires?
4 Answers
The differences between 91V and 91H tires: 1. The maximum speed under load varies: V represents 240 km/h; while H stands for 210 km/h. 2. There is also a difference in price: Tires of the same size and specification, 91V tires are more expensive than 91H, as their load capacity is stronger than that of 91H. Additional notes: 1. 91V and 91H tires cannot be mixed. 2. When purchasing tires, the original vehicle should be equipped with tires of the same specification, structure, manufacturer, and tread pattern. 3. In other words, whether it's the load index or the maximum speed under load, they need to be consistent, especially for tires on the same axle. Otherwise, it may affect the vehicle's handling stability during high-speed driving, posing certain safety risks.
The difference between tire markings 91V and 91H mainly lies in the speed rating. The number 91 indicates the same load capacity for both, able to withstand 615 kg, but V represents a speed rating of 240 km/h, while H is 210 km/h. I usually prefer steady driving, so I pay more attention to this speed difference. The 91V is suitable for high-speed racing or aggressive driving, as it offers better stability and stronger grip at high temperatures. The 91H is ideal for daily city driving, with a maximum speed of 210 km/h being generally sufficient, especially on flat roads where the difference is minimal. If the vehicle has a high-horsepower engine, the 91V is recommended to avoid the risk of overspeeding. On the other hand, for ordinary family cars, the 91H is more economical and wears slower. Weather conditions should also be considered—the 91V provides slightly better control during high-speed driving in the rain. However, I suggest choosing based on actual driving habits rather than blindly opting for a higher rating and wasting money.
As a seasoned driver with years of experience, I believe the key difference between 91V and 91H lies in their speed limits: the V can handle up to 240 km/h, while the H maxes out at 210. Having used both, under the same load of 615 kg, the 91V performs more aggressively on highways, offering smoother acceleration without wobbling and superior grip, making it ideal for speed enthusiasts. On the other hand, the 91H is perfectly adequate for medium speeds, more than sufficient for national highways or city driving. From a durability perspective, the 91V's material is more heat-resistant, reducing worries about deformation during long summer trips, but the 91H is cheaper and lasts longer, making it a solid choice for everyday commuting. Don’t overlook the impact of tire temperature—the 91V maintains better stability at extreme speeds, but in my real-world experience, there’s hardly any difference between the two below 220 km/h unless your vehicle supports high RPMs.
The load index of 91V and 91H is the same, both with a maximum load capacity of 615 kg. The main difference lies in speed: V is rated for up to 240 km/h, while H is rated for up to 210 km/h. For regular small car driving, 91H is sufficient—more fuel-efficient and cost-effective, as the higher V rating is unnecessary for high-speed use. Both perform similarly in daily driving, but V offers slightly better stability during high-speed overtaking, such as stronger grip in corners. Long-term, 91H wears slower and has lower costs, making it ideal for practical users. Don't blindly chase higher numbers.
