To what extent should the tires be replaced?

When the tread pattern of the tire is worn to the extent of wear marks, the grip ability and energy absorption and shock absorption ability of the tire have been greatly reduced, which will lead to too late side slip and increase the braking distance, thus affecting the safety of automobile driving; At the same time, due to the reduced energy absorption and shock absorption capacity of the tire, the riding comfort is also greatly reduced and the tire noise is increased. Under normal circumstances, I usually change it about 2 to 3 mm away from the safety sign. But sometimes there will be some special circumstances that will speed up my tire change, such as a flat tire and aging caused by various reasons. But many times, I still follow the normal situation.

If the tire is badly worn and has no drainage function, it is equivalent to a smooth tire. After the official smooth tire quickly drove on the stagnant road to form a water film, the tire slipped like a snowboard. Tires without grip will slip out of control when turning at high speed, but fortunately, most family cars have to replace the tires before they wear out. If the automobile tire is replaced according to the degree of wear, you can generally check the convex position and side logo of the tread groove. Generally, the height of the protrusion in the groove is 1.6mm, and the wear to 1.6mm is the limit value. In general, when the tire groove depth is less than 2.5 mm, it is recommended to replace the tire.

The pattern on the tire also plays a great role in the passability and grip performance of the car. Tires will wear more and more when they are used for a long time, and the patterns will become flatter and flatter. Driving in sunny days will reduce the grip of the car, and driving in rainy days will reduce the drainage performance of the tires, making them very easy to slip.

If the tire has not worn to the safety line in 5 or 6 years, it will almost be replaced, because the tire will start to age in about 6 years, and some fine cracks will appear in the crown or sidewall, which is the aging phenomenon. Aging tires still have a certain risk of puncture when driving at high speed or passing through a pit. It is not recommended to take time as the standard to see whether to change tires. Everyone uses cars differently. I have met a driver friend who is a full-time drip driver. He runs 65438+ 10,000 kilometers every year and has to change his tires twice a year. Some female drivers are afraid to drive after buying a car, so they eat ashes in the garage for fear that it will take 10 years to change a tire.