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What does 98W on the back of a car tire mean?

2 Answers

LeLeah

07/25/25 1:03pm

98W represents the following meanings: 98: refers to the load index of the tire, with a corresponding maximum load capacity of 750KG per tire; W: indicates the speed rating of the tire, which denotes the maximum speed the tire can carry a specified load under specified conditions, with W representing a maximum speed of 270 kilometers per hour. Below is more information about it: 1. Supports the entire weight of the vehicle, bears the load of the car, and transmits forces and moments in other directions; 2. Transmits traction and braking torque, ensuring good adhesion between the wheel and the road surface to improve the car's power, braking, and passability; 3. Works together with the car suspension to mitigate the impact during driving and dampen the resulting vibrations; 4. Prevents severe vibrations and early damage to car components, adapts to the vehicle's high-speed performance, reduces driving noise, and ensures driving safety, handling stability, comfort, and energy efficiency.

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KimberlyRose

08/11/25 8:35pm

The 98W on the tire is a tire identification code. Let me explain what it means. 98 refers to the load index, which indicates the maximum weight the tire can bear. 98 corresponds to approximately 750 kilograms, meaning each tire can carry up to this weight. W is the speed rating, representing the tire's maximum safe speed. A W-rated tire can handle speeds up to 270 km/h, making it suitable for high-speed driving. I've changed tires before, and choosing the wrong specifications can make the car feel unstable, increase fuel consumption, and be dangerous. Tires also have a production date code, such as the year and month following the DOT marking. When buying new tires, it's important to check this to ensure they're not too old. Different vehicles have different load indices; for example, a small car might use 95, while an SUV might use 99. It's essential to refer to the original manufacturer's manual for the correct match. Whenever I change tires, I always remind the mechanic to check this for safety.

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