What do the numbers and letters on car tires mean?

1 Answers
VonLillian
07/24/25 6:57pm
The number before the slash represents the tire section width, the slash simply separates the front and rear numbers, and the number after it represents the aspect ratio. The letter R stands for radial tires, while the absence of R may indicate bias-ply tires, which are also known as nylon tires. Here are some precautions for tire use: tire wear; tire pressure; removing debris from tread grooves; tire rotation; tire dynamic balance; and paying attention to driving habits. Tire wear: Worn tire treads can cause loss of traction, affect handling, increase the risk of blowouts, and also reduce the tire's ability to expel water and dirt. Tire pressure: Car owners should also have a tire pressure gauge on hand to check tire pressure regularly. Removing debris from tread grooves: Car owners should promptly remove foreign objects from tires to prevent stubborn stones from getting stuck in the treads. When tires wear to a certain extent, these objects can puncture the tire body, leading to air leaks or even blowouts. Tire rotation: Rotate tire positions every 10,000 kilometers to evenly distribute tire fatigue and prevent uneven wear, thereby extending tire life. Tire dynamic balance: If the vehicle experiences body or steering wheel vibrations while driving, have it checked at an authorized service center. Paying attention to driving habits: Car owners should avoid rapid acceleration, hard braking, or sharp turns; avoid hitting curbs; avoid parking on curbs; and avoid driving quickly on unpaved or uneven roads.
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