What does 91W at the back of the tire mean?
2 Answers
Tire specification model identification behind the 91V and 91W in the 91 represents the tire load index, indicating that the maximum load of this tire is 615kg. Introduction to relevant knowledge about car tires: 1. Specification model: Tires are important components of a car, and there are many specification models of tires, with different specification models suitable for different types of vehicles. 2. Identification position: The specification model identification is usually on the side of the tire, represented by a series of alphanumeric symbols, corresponding to the tire's tread width, aspect ratio, type, rim size, load index, and speed rating. For example: 225/45R1791W.
The 91W on a tire is a crucial marking. The number 91 indicates the load capacity, corresponding to a maximum weight of 615 kilograms per tire, which acts as the safety limit when the car is fully loaded. The W stands for the speed rating, meaning the tire can safely handle speeds up to 270 km/h, making it suitable for high-speed driving or sports cars. I’ve noticed that many car owners overlook this and choose mismatched tires, which could lead to blowouts during sharp turns or long trips. For example, whether it’s an SUV or a sedan, always check the vehicle manual for the recommended load and speed requirements when buying new tires. The 91W rating is commonly found in high-performance tires, but even for daily use, it’s essential to regularly inspect these numbers on the tire sidewall to avoid overloading or speeding-related accidents. After all, tires are like the shoes of a car—wearing the wrong ones makes even walking dangerous. Safe driving starts with understanding these small markings.
