What is the difference between 91v and 94v on tires?
3 Answers
The difference between 91v and 94v on tires: 91v indicates a load index of 615kg; 94v indicates a load index of 670kg. The functions of tires are as follows: 1. Prevent severe vibrations and premature damage to vehicle components, adapt to the high-speed performance of the vehicle and reduce driving noise, ensuring driving safety, handling stability, comfort, and energy efficiency. 2. Support the entire weight of the vehicle, bear the load of the car, and transmit forces and moments in other directions. 3. Transmit traction and braking torque, ensure good adhesion between the wheels and the road surface to improve the vehicle's power, braking, and passability; work together with the vehicle suspension to mitigate impacts during driving and dampen resulting vibrations.
I remember when I first bought my car, I also researched tire parameters. The difference between 91V and 94V actually lies in their load capacity. 91 means a single tire can bear 615 kg, while 94 means 670 kg, which is 55 kg more. The letter V is the same for both, indicating a maximum speed of 240 km/h. For regular sedans, 91V is sufficient, but I found that friends driving SUVs should opt for 94V, as the vehicle weight plus luggage can easily overload. If you frequently drive fully loaded on highways, you should consider this load index, otherwise, the tires may bulge or crack prematurely, which is quite dangerous, and the cost of replacing tires could be higher. I recommend everyone to match tires according to the load index required by the vehicle manual, and not to choose cheaper options with incorrect specifications.
The core difference between these two tire parameters lies in the load index represented by the numbers. The 91V has a maximum load capacity of 615kg, while the 94V increases to 670kg, offering nearly 9% greater load-bearing capacity. If you frequently carry heavy loads or have a fully loaded vehicle with passengers, the 94V is definitely more suitable. I've seen many car owners overlook this, only to find their tires prone to deformation and air leakage. Although both have the same speed rating of V (240km/h), for family MPVs or pickup trucks, the 94V's tire structure and cord material are more robust. Choosing tires shouldn't just be about brand and price—the load index directly impacts driving safety and tire lifespan.
