The maximum speed of a 100h tire is 210 kilometers per hour. The following explains the specific meanings: the number represents the maximum load index designed for the tire, and 'h' represents the speed rating. Passenger car wheels generally use radial tires. The specifications of radial tires include width, aspect ratio, inner diameter, and speed limit symbols. It is particularly important to note the aspect ratio, which refers to the percentage of the tire sidewall height relative to the tire width. Modern passenger car tires typically have aspect ratios between 50 and 70. The smaller the value, the flatter the tire shape. Both 'h' and 'v' indicate the speed rating of the tire, which is the maximum speed at which the tire can carry the specified load under specified conditions. A 100v tire has a maximum safe speed limit of 240 km/h. In addition, there are various other letters representing different speed ratings: Functions of car tires: They work together with the car suspension to cushion the impact during driving, ensuring good ride comfort and smoothness. They also ensure good adhesion between the wheels and the road surface, improve the car's traction, braking, and off-road capabilities, and bear the weight of the car. In daily use of tires, the following points should be noted: Regularly check the tire surface for cracks, deformations, or other defects. Due to driving wear, the tread grooves gradually become shallower. If the tread is worn flat, it will lose its drainage and anti-slip functions, significantly reducing the car's performance. Small cracks may seem minor but can be a hidden danger for tire blowouts at high speeds. Additionally, stones in the grooves should be promptly removed. Try to park on flat ground. Avoid parking on roads with thick, sharp, or pointed stones. Do not park near or in contact with petroleum products, acids, or other materials that may deteriorate rubber. After parking, the driver should not turn the steering wheel, as this operation will accelerate tire wear. Do not splash water to cool down. In hot weather or during high-speed driving, tires are prone to overheating, and the air pressure will increase. In such cases, park to allow the tires to cool down naturally. Do not release air to reduce pressure or splash water to cool down, as this may cause abnormal aging of the tread rubber. Avoid sudden braking. Try to minimize frequent use of brakes and emergency braking to prevent accelerated tread wear due to dragging between the tires and the ground.
