What does the 'H' on a tire mean?

[DelMarcus]

The 'H' on a tire indicates a speed rating of 210 kilometers per hour under load conditions. The functions of a tire are: 1. To support the entire weight of the vehicle and bear the load of the car; 2. To transmit traction and braking torque, ensuring the adhesion between the wheels and the road surface; 3. To mitigate and absorb vibrations and impact forces during driving, preventing severe vibrations and premature damage to automotive components; 4. To adapt to the high-speed performance of the vehicle, reduce driving noise, and ensure driving safety, handling stability, comfort, and fuel economy. Methods for tire maintenance include: 1. Regularly cleaning stones from the tire treads; 2. Minimizing exposure to direct sunlight; 3. Promptly checking tire pressure; 4. Paying attention to suspension maintenance; 5. Conducting regular front-wheel alignment checks; 6. Adopting careful driving practices, such as selecting smooth road surfaces and avoiding objects that could puncture or scratch the tires, as well as chemical spills that may corrode the tires.