What are the red and yellow spots on the tires? How to check the front tires before long-distance driving

Many car owners have found that there are red and yellow spots on new tires, but they don't know what they mean. Even many car repairmen don't know. Some people may say, why bother to know about them, as long as the car can be driven. If you think so, then you are wrong. Any object has its value as long as it exists. For example, the red and yellow spots on tires require a lot of knowledge.

Contents of this article

1. What are the red dots on the tires?

2. What does the yellow dot on the tire mean?

3. How to check the front tires before long-distance driving

What are those red dots on the tires?

This red dot represents the maximum longitudinal stiffness of the tire. Simply put, the red dot is where the tire vibrates the most. When the vehicle rotates around the ground, each position in the tire will be subject to different squeezing forces, which will indirectly affect driving comfort.

The hollow yellow dot is the lightest mark on the tire. The most important point of the wheel and the lightest point of the tire can complement each other, balancing the load-bearing capacity of the entire wheel and making driving more comfortable. At the same time, if you want to judge the quality of a tire, in addition to judging by the brand and model of the tire, you can also judge whether the valve on the tire corresponds to the yellow dot.

What do the little yellow dots on tires mean?

This hollow yellow dot is actually the lightest point mark of the tire, indicating that this position is the lightest point in the tire. The wheels of our cars are composed of three parts: tire, wheel hub and valve. Because the valve stem is installed on the wheel hub, and the valve stem can correspond to the heaviest point on the wheel hub, so when assembling the tire at the end, the yellow mark on the tire should correspond to the most important point on the wheel hub to achieve a better dynamic balance effect.

How to check the front tires when driving long distances

1. Check whether the tire is bulging: Cars often scrape curbs or flower beds when parking, pass speed bumps at high speed, pass through bumpy and bad road conditions, etc. These are the reasons for the tire bulging. It is extremely dangerous to run a tire bulging at high speed, so if you find a bulge, we recommend that you replace the tire immediately.

2. Check whether there are foreign objects on the tire tread: If the tire is punctured or embedded with foreign objects, the tire should be repaired. If there are a lot of small gravel embedded, it is best to use a screwdriver to remove it.

3. Check whether the tire tread is eccentric and whether the air pressure is appropriate: "Eccentric wear" means uneven wear of the tread, such as more wear on the outside than on the inside. There are many reasons, which can be solved in this order: Check whether the tire pressure is too high. If it is too low, if there is a problem, adjust the tire pressure immediately-> Drive straight for a while, and see if the car deviates when the steering wheel is straight. If there is a problem, do a four-wheel alignment. If the eccentric wear is serious, it is recommended to consider replacing the tire after inspection.

4. Check whether the tire is aged: If it is caused by rubber aging, replace the tire quickly. It is usually caused by scratches. In principle, it is recommended to replace them. However, if a thin layer of skin is lost, most people are reluctant to replace them. If the inner cord layer can be seen, it is necessary to replace it as soon as possible. The sidewall is not as thick as the tread and it is easy to bulge.