Is there a difference between 91V and 91W tires?
2 Answers
91V indicates a maximum speed capacity of 240 km/h, while 91W indicates a maximum speed capacity of 270 km/h. Here are the specific differences between the two: 1. Speed rating: V means the tire can withstand speeds up to 240 km/h, while W means the tire can withstand speeds up to 270 km/h. 2. Load index: 91 represents the tire's load index. A 91W tire can bear a load of 615 kg and withstand a maximum speed of 270 km/h. Tire speed ratings can be divided into different grades from A to Z, with grade A further subdivided into eight different levels from A1 to A8. The later the letter representing the tire speed rating, the better the tire performance.
I often help friends check tire specifications, and this question is quite interesting. The main difference between 91V and 91W lies in the letter. The number 91 indicates the same load capacity, both capable of bearing approximately 615 kilograms, but V represents a maximum speed of 240 kilometers per hour, while W stands for 270 kilometers per hour. This makes a significant difference in actual driving. W-rated tires use more heat-resistant materials and reinforced structures, providing better grip during high-speed cornering or rapid acceleration, with a higher safety factor. However, ordinary family cars rarely require such high speeds, and V-rated tires are usually sufficient, making it unnecessary to spend extra money upgrading to W. When choosing tires, it's essential to consider your car model and daily driving habits. Don't just focus on the specifications; it's best to check the owner's manual or consult a professional technician to avoid purchasing unsuitable tires that could affect handling and wear.
