What is the speed rating of 91V tires?
2 Answers
91V represents a maximum speed of 240km/h. The preceding number indicates the tire's load index, while the following letter denotes the speed rating. 91 refers to a load index of 615kg, and V signifies a maximum speed rating of 240km/h. Additional information: 1. Meaning of tire specifications: Tire specifications are the marking data indicating the geometric parameters and physical performance of tires. 2. Methods of representing tire specifications: There are three methods for representing tire specifications: A. Metric; B. Metric-Imperial hybrid; C. Imperial. Imperial tire specifications are commonly represented by a set of numbers, where the first number indicates the tire section width and the second number indicates the rim diameter, both measured in inches.
As a car enthusiast, let me explain tire markings to you. The 'V' in 91V indicates a speed rating of V, with a maximum sustained speed of 240 kilometers per hour. This standard is internationally unified, ensuring tires can operate safely at high speeds without adding risk to the vehicle. I've used several V-rated tires, and they provide excellent handling and shorter braking distances at highway speeds. It's important to note that this speed is theoretical; avoid prolonged high-speed driving in practice, as it generates heat that can affect tire durability. Additionally, the load index 91 means the tire can bear 615 kilograms, which is particularly crucial for SUVs or heavy-duty vehicles. For maintenance, I recommend checking tire pressure monthly, keeping it at the manufacturer's recommended value to prevent blowouts. In short, when choosing tires, select a V rating that matches your daily driving speed—safety first.
