What does 100y mean on car tires?
1 Answers
Car tire 100y refers to the load index and speed rating of the tire. Here, 100 represents the load index, indicating that the tire can bear a maximum weight of 800kg under normal inflation conditions. The letter y denotes the speed rating, showing that the tire's maximum speed under specified conditions with designated load is 300km/h. The functions of tires include: 1. Supporting the vehicle's entire weight, bearing the car's load, and transmitting forces and moments in other directions; 2. Transmitting traction and braking torque to ensure good adhesion between wheels and road surface, thereby improving the vehicle's power performance, braking efficiency, and passability; 3. Working together with the car suspension to cushion impacts during driving and dampen vibrations; 4. Protecting automotive components from severe vibrations and premature damage, adapting to the vehicle's high-speed performance while reducing driving noise.