What are the main aspects of changing tires? Can you elaborate on it?

Tyre is one of the most important parts in a car. The performance of a car depends entirely on the tires used for a long time. Not only that, the tires also bear the weight of the whole vehicle and our safety, so it is best to check the tires regularly at ordinary times. What should I mainly look at when checking tires? How often is it better to change the tires?

1, the "three T" sign on the tire.

The US Department of Transportation stipulates that there must be tire wear (tread? Wear), traction (traction) and temperature (temperature), referred to as "three T" signs. Most tires on the market have "three T" signs.

Tread wear is represented by numbers, which represent the mileage that a tire can run in the same use environment. The bigger the number, it can be understood that this tire is more wear-resistant. Generally, tires with excellent grip performance have lower wear index.

In fact, the traction parameters are more straightforward and easy to understand, and are marked by AA/A/B/C, where AA stands for excellent and C stands for worst. The higher the value, the better the longitudinal traction on the wetland.

The temperature index grade reflects the advantages and disadvantages of the tire's own heat dissipation ability. The higher the temperature index, the better the stability at high speed.

2. Look at the depth of the tire tread

The tread depth of tire is an important index to check whether the tire needs to be replaced. The tread drain groove of each tire has wear marks. When the tire is worn to the mark, it needs to be replaced. Another important criterion is time. Many people don't use cars very much at ordinary times, and the mileage is not much every year. After several years of use, the tire tread is still very deep. In this case, it is necessary to replace the tire according to the age, because the tire is rubber, and it will oxidize with the increase of service time.

3. Look at the tire size

The diameter, flattening rate and tire width of the left and right tires must be consistent. If the left and right wheels are different in size, there will be a series of dangerous situations such as vehicle deviation. Furthermore, it is recommended that you give priority to the same brand of tires when changing tires. In this way, the closer the performance of the left and right tires is, the better the handling performance of the vehicle can be guaranteed. Secondly, it is best to ensure that the tire patterns of the four wheels are consistent, because the tire patterns have a great influence on the rolling resistance, wear and grip of the wheels. If the grip of the left and right wheels on the same axle is different, it will also affect the performance of the vehicle.