What does 91V on car tires mean?

[McMila]

Tire marking 91V refers to the load index and speed rating. The number 91 represents the load index, indicating a maximum load capacity of 615Kg per tire, while the letter V signifies that the tire's maximum allowable speed is 240km/h. Specification markings: Tires are crucial components of vehicles, and they come in various specifications and models suitable for different vehicle types. These specification markings are typically found on the tire sidewall as a series of alphanumeric characters, representing the tire's tread width, aspect ratio, type, rim size, load index, and speed rating. Speed ratings: Based on their maximum sustainable speeds, tires are classified into different speed ratings from A to Z, with grade A further divided into eight subcategories (A1-A8). Generally, the later the letter appears in the alphabet for the speed rating, the better the tire's performance.

[River]

As someone who often pays attention to car details, I find the 91V marking on tires quite interesting. 91 refers to the load index, indicating that this tire can bear a weight of 615 kilograms; V is the speed rating, meaning it can handle a maximum speed of 240 kilometers per hour. Simply put, it's like the tire's 'certificate of capability'—each combination of numbers and letters follows specific standards to ensure it matches the needs of different vehicle models. Using unsuitable tires, such as those overloaded or driven too fast, can lead to unstable tire pressure or premature blowouts, compromising driving safety. When purchasing tires, besides checking the size, it's essential to match the vehicle's manual requirements to ensure smoother and more durable driving. It's advisable to regularly inspect tire wear, especially before highway trips, and not overlook these small markings.

[Javier]

After years of driving, I've always paid attention to the alphanumeric codes on tires, such as 91V, which indicate load capacity and speed limits. The number 91 means the tire can carry a maximum load of 615 kilograms, while the letter V signifies it can safely operate at speeds up to 240 km/h. These markings aren't arbitrary—they directly impact vehicle performance and safety. Mismatched tire ratings, like fitting a low-load tire on a heavily loaded vehicle or driving beyond the speed limit, can increase the risk of a blowout, especially when cornering or on rough roads. As a car owner, I always check the manual when replacing tires to ensure the correct rating is selected. By the way, different seasons and environments also affect tire usage—for example, summer and winter tires have different ratings. Understanding these details before driving can help extend tire lifespan.

[VonLilliana]

The code like 91V on the tire sidewall is crucial information marked by manufacturers. 91 refers to the load capacity, with each tire capable of supporting up to 615 kilograms; V indicates the speed rating, allowing a maximum speed of 240 km/h. When selecting tires, it's essential to choose the appropriate index based on your vehicle type, as there are differences between family sedans and SUVs. Ignoring these codes may lead to unstable handling or safety hazards, so it's advisable to cross-check with your vehicle manual when buying new tires or replacing old ones. Developing the habit of checking these markings can make daily driving safer and more reassuring.

[McHeidi]

In daily maintenance, the 91V marking on tires is very practical. 91 represents a maximum load capacity of 615 kg, and V indicates a speed limit of 240 km/h. This combination is suitable for most sedans. If the index does not match the vehicle's requirements, tire wear will accelerate, and there may even be abnormal noises or vibrations while driving. As a user, I regularly clean the tire sidewalls to check these markings, especially before long trips. Considering the service life of tires, it is recommended to check the compatibility every two to three years, and refer to the brand's recommended index when replacing tires. Don't forget, road conditions and climate also affect performance, such as needing good grip in rainy weather.