According to national standards, every tire has a mark. If it wears to that point, it needs to be replaced. In other words, you can still see a little pattern. In the United States, if you don’t replace it if it wears to that point, You will be punished by the traffic police. There is no such regulation in China, but there is that mark. The Chinese like to wait until they see the steel wire before changing it. There are them on both sides of the sidewall, and there are several marks on each side. Some are TWI, and some are one. Small triangular shape. Look at the bottom of the tire just above this mark. You will find that there is a small piece of rubber in the bottom groove that is a little higher. When the tire wears to that place, it needs to be replaced. Generally, tires are not easy to age. They only last 5-6 years. You can tell... Mainly to see if there are any small cracks on the sidewall. If there are any, it means it is aged...

"▲" tells you when it is time to change the tire

The "▲" logo code

The side of the car tire has the tire specifications, trademark and factory name, standard wheel hub, production number and maximum load code printed by the impression. On the tire shoulder, along the circumferential Friday Stamped "▲" mark at the equal division point. What does this logo represent?

It is a tire wear warning signal sign.

The car tire crown not only protects the carcass from the impact of the road surface, but also maintains a certain degree of adhesion with the ground. Adhesion enables a car to drive, steer and brake. The higher the adhesion, the better the car's handling stability. Therefore, the adhesion between the tire and the ground directly affects the safety of the car. In addition to material factors, the tire crown pattern is also one of the determining factors for the adhesion between the tire and the ground.

How can you determine whether you need to replace your tires? The specific method is: set a 1.6mm high boss in the axial direction at the bottom of the pattern groove at the five equal parts of the tire's circumference (this is the case in most countries) on the tire's crown surface. When the tire tread wears to 1.6mm from the bottom of the groove, this part of the groove begins to break, and a clear crack appears, thus reminding the driver that the tire must be replaced.