What does 91W at the back of the tire mean?

[LandonFitz]

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.

[GavinMarie]

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.

[OAvery]

The 91W marking on the side of a tire is actually quite practical: 91 is the load index, indicating that the tire can carry a maximum weight of approximately 615 kilograms; W is the speed rating, meaning it's designed to safely handle speeds up to 270 kilometers per hour. When I drive, I always remind my friends to pay attention to this marking, especially during family trips when the vehicle weight increases. If the tire's load capacity is insufficient, long-distance travel on bumpy roads could lead to loss of control or a blowout. As for the speed rating, W is commonly seen on sports cars, but it's also important for everyday vehicles. Driving at excessive speeds can easily wear out the tires and create risks. It's advisable to check these tire parameters during every maintenance session to ensure they match the vehicle specifications—safety first. When choosing tires, don't just go for the cheapest option; referring to the manufacturer's recommendations can save a lot of hassle. After all, the tires are what connect us to the road, ensuring our safe driving is the top priority.

[VonGideon]

In the 91W marking on tires, 91 represents the load capacity, with a maximum of 615 kg per tire; W indicates the speed rating, supporting a top speed of up to 270 km/h. For driving enthusiasts like me, this is crucial because W-rated tires maintain stable grip at high speeds, reducing the risk of losing control. Regarding load capacity, exceeding 615 kg may cause tire deformation and affect balance. When choosing tires, it's essential to match them to the vehicle type—for example, sports cars often require W-rated high-performance tires. Remembering this can make driving more confident.