What does the tire code mean?
2 Answers
Represents the ratio of the tire sidewall height to the tire section width. Different tire models have different dimensions. If a tire is damaged and needs replacement, it is advisable to choose a tire of the same model. Here are some introductions about tires: 1. Tires are important components of a car. There are more than 10 types of markings on car tires. Correctly identifying these markings is crucial for tire selection, use, and maintenance, and is also significant for ensuring driving safety and extending tire lifespan. 2. Regularly check tire pressure. Proper tire pressure can effectively improve vehicle performance and fuel economy. The tire pressure varies slightly depending on the vehicle model and tire type.
The code on the side of the tire may look complicated, but it's actually quite interesting. Take 225/45R17 94W for example: 225 refers to the tire width of 225 millimeters—the larger the number, the wider the tire. 45 is the aspect ratio, meaning the tire's height is 45% of its width; a smaller ratio makes the tire look thinner and sportier. R stands for radial construction, which is the standard nowadays. 17 corresponds to the wheel diameter in inches. 94 is the load index, indicating a maximum load capacity of 615 kilograms, and finally, W is the speed rating, representing a top speed of 270 km/h. Remembering this code is crucial when replacing tires—wrong dimensions can cause rubbing against the wheel arch, and an insufficient speed rating can be dangerous for highway driving.
