What is the Difference Between 91V and 91H?
2 Answers
The differences between tire 91V and 91H mainly include the following points: 1. Different representations. H and V indicate the maximum speed ratings. H stands for a maximum speed of 210 km/h, while V stands for 240 km/h, ensuring safety within these limits. The number 91 refers to the load index of a single tire, which is 615 kg. 2. Different stability levels. Both the load index and the maximum speed under load must be consistent, especially for tires on the same axle. Otherwise, (during high-speed driving) it may significantly affect the vehicle's handling stability, posing certain safety risks.
I've been driving for over 20 years and personally experienced the difference between 91V and 91H tires. 91V represents a maximum speed of 240 km/h, while 91H is 210 km/h, both with the same load index of 91 capable of carrying 615kg. The key difference lies in the speed rating - V-rated tires are made of more heat-resistant and wear-resistant materials, providing rock-solid stability at high speeds. H-rated tires tend to overheat and soften when exceeding 180 km/h. I once drove long distances in the fast lane with H-rated tires and experienced noticeable vehicle wobbling that was downright terrifying. For frequent highway drivers, I recommend choosing 91V tires for increased safety margins, while 91H is more economical for short urban trips. Don't underestimate that 30 km/h difference - it affects tire lifespan and driving safety, potentially being life-saving in critical situations.
