What does 4PR tire mean?

[MacJourney]

4PR tire refers to a tire with 4 layers of fiber, meaning the more layers it has, the stronger its load-bearing capacity and the thicker the tire. Generally, 4PR tires are used for front wheels, while 6PR tires are used for rear wheels. Tires are circular elastic rubber products mounted on various vehicles or machinery to roll on the ground. They are usually installed on metal rims, supporting the vehicle body, cushioning external impacts, ensuring contact with the road surface, and maintaining the vehicle's driving performance. Below are the functions of car tires: 1. Support the entire weight of the vehicle: Bear the vehicle's load and transmit forces and moments in other directions. 2. Transmit traction and braking torque: Ensure good adhesion between the wheels and the road surface to enhance the vehicle's power, braking, and off-road performance; work with the vehicle suspension to mitigate impacts during driving and dampen resulting vibrations. 3. Prevent damage to vehicle components: Protect vehicle parts from severe vibrations and premature wear, adapt to high-speed performance, reduce driving noise, and ensure safety, handling stability, comfort, and fuel efficiency.