What is the speed rating code for tires?
2 Answers
Tire speed ratings are all indicated by letters. For household vehicles, the commonly used speed rating is V, which means the tire can withstand a maximum speed of 220 kilometers per hour. Above V, there are W and Y, where W represents a maximum speed of 270 kilometers per hour and Y represents 300 kilometers per hour. The maintenance methods for tires are: 1. Regularly clean stones from the tire treads; 2. Reduce exposure of tires to direct sunlight; 3. Promptly check tire pressure; 4. Pay attention to suspension maintenance; 5. Regularly inspect front wheel alignment; 6. Be mindful of driving habits, choosing road surfaces carefully to avoid objects that can puncture or scratch tires, and steering clear of chemical spills that can corrode tires. The functions of tires are: 1. Supporting the entire weight of the vehicle and bearing the load of the car; 2. Transmitting traction and braking torque to ensure the adhesion between the wheels and the road surface; 3. Reducing and absorbing vibrations and impacts during driving, preventing severe vibrations and premature damage to car components; 4. Adapting to the high-speed performance of the vehicle and reducing driving noise, ensuring driving safety, handling stability, comfort, and energy efficiency.
The speed rating code on tires refers to those small letters on the sidewall, such as the common 'T' which indicates a maximum safe speed of 190 km/h. Having driven SUVs for years, I always pay attention to this code when changing tires—it tells you how fast you can go without risking safety. Different letters correspond to different speed limits, like 'H' for 210 km/h and 'V' for 240 km/h, so you need to choose based on your vehicle type. I remember a friend once ignored this and experienced a skid from speeding on the highway—luckily, no accident occurred. Regularly check tire markings and pressure to ensure driving safety. Especially before long trips, always confirm the speed rating matches your driving habits to reduce the risk of blowouts. When replacing tires, prioritize the manufacturer-recommended rating—don’t cheap out and pick a lower one to avoid unnecessary safety hazards.
