What does 91V 91W mean on tires?

[VonJade]

Tire specification model markings 91V and 91W, where 91 represents the tire's load index, indicating that the maximum load capacity of this tire is 615kg. Here are the relevant explanations: 1. Difference: The difference between 91V and 91W tires lies in the letters V and W at the end. The letters represent the speed rating of the tire, with V indicating that the tire can withstand a maximum speed of 240km/h, and W indicating that the tire can withstand a maximum speed of 270km/h. In other words, a 91W tire refers to a tire that can bear a load of 615kg and withstand a maximum speed of 270km/h. 2. Speed rating: Based on the different maximum speeds they can withstand, 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. Generally speaking, the further back the letter representing the tire speed rating is in the alphabet, the better the tire performance.

[VonBryce]

Alright, talking about tires is quite interesting. The numbers and letters in the so-called 91v91w tires mainly indicate the tire's load-bearing and speed capabilities. The number 91 is the load index, meaning the tire can bear a weight of 615 kilograms; V and W are speed rating symbols, with V representing a maximum speed of 240 kilometers per hour and W being 270 kilometers. However, writing it as 91v91w seems a bit odd—it might be a typo or mistake, as the standard format is usually something like 91V. If you're a new driver, paying attention to these codes is quite important because they relate to the tire's durability and grip at high speeds. If you choose the wrong ones, driving at high speeds might feel unstable or even lead to a blowout, so it's best to double-check your wheel parameters when buying tires to avoid wasting money or creating safety hazards. Regular maintenance should also include checking for wear and tear—keeping your tires in good condition can definitely enhance your driving experience.

[LeIris]

Looking at tire specifications from another angle, I reckon the notation '91v91w' is likely a minor mistake—the standard format should be '91' followed by a single letter. Here, '91' indicates the load index, meaning each tire can bear over 600 kilograms, while 'V' or 'W' represents the speed rating. Having changed tires myself several times, I often encounter similar questions. In reality, this relates to tire material and structural design—different speed ratings correspond to varying tread hardness. If you're unfamiliar, it's best to consult your vehicle manual or ask a mechanic rather than guessing blindly. Choosing tires requires matching your car model and driving habits: W-rated tires are safer for high-speed vehicles, while V-rated ones suffice for lower speeds. Incorrect tire parameters can lead to increased fuel consumption or a bumpier ride. From a practical standpoint, regularly checking these figures can save you a lot of hassle.

[JordanRose]

Simply put, 91v91w likely refers to the load index 91 and speed ratings V or W, but it might be a typo. A load index of 91 can bear 615kg, with V representing a maximum speed of 240km/h and W being 270km/h. These markings on tires indicate their suitability for specific driving conditions—exceeding speed or load limits can damage the tire. Just verify the correct version; no need to overthink it.