What is the difference between 91W and 91V?
2 Answers
Here are the specific differences between car tires 91V and 91W: 1. Speed rating: V indicates that the maximum speed this tire can withstand is 240 km/h, while W indicates that the maximum speed this tire can withstand is 270 km/h. 2. Load index: A 91W tire refers to a tire that can bear a load of 615 kg and withstand a maximum speed of 270 km/h. Below is extended information about car tire specifications: 1. Specification model representation: Tires are important components of a car, and there are many specification models of tires, with different models suitable for different types of vehicles. The specification model identification is usually on the sidewall of the tire, represented by a series of alphanumeric characters, corresponding to the tire's tread width, aspect ratio, type, rim size, load index, and speed rating. 2. Speed rating: Depending on the maximum speed they can withstand, tires can be divided into different speed ratings from A to Z, with the A rating further subdivided into eight different levels from A1 to A8. The further back the letter representing the tire's speed rating is in the alphabet, the better the tire's performance.
When I changed tires before, I specifically compared 91V and 91W, and felt that ordinary people might not pay much attention to this difference. 91 refers to the load index, both are 615 kilograms, meaning the load-bearing capacity is exactly the same. The key difference lies in V and W, which represent speed ratings—V can go up to 240 kilometers per hour, while W can reach 270. I often drive on highways and have tried W-rated tires, feeling they provide more stability during overtaking, with better grip and less tendency to skid; whereas V-rated tires are fine for normal city driving, but pose higher risks when speeding. For general family cars, choosing V to save some money is sufficient, but performance-oriented owners tend to prefer W. Remember to replace tires when they wear out to avoid accidents due to poor grip in rainy conditions.
