What does the letter H on a tire mean?

[IsabellaMarie]

The letter H on a tire represents the speed rating of the tire. The speed rating indicates the maximum speed at which the tire can carry a specified load under defined conditions. Here is some relevant information about tires: Tires are circular elastic rubber products installed on various vehicles or machinery, mounted on metal rims to support the vehicle body, cushion external impacts, ensure contact with the road surface, and maintain the vehicle's driving performance. Below are the steps for replacing a tire: 1. Park the vehicle, turn off the engine, and apply the handbrake; 2. Place heavy objects in front of and behind the wheel to prevent slipping, and set up a triangular warning sign behind the vehicle; 3. Use a wrench to loosen the lug nuts of the tire to be replaced in a diagonal pattern; 4. Position the jack on the side of the vehicle where the tire needs to be replaced and lift the vehicle to a certain height; 5. Remove the lug nuts and take off the tire; 6. Install the spare tire or new tire, tightening the lug nuts in a diagonal pattern; 7. Lower the vehicle by releasing the jack and ensure that all nuts and bolts are securely tightened.