First, the tread loss is close to the wear mark
Any brand of tire will have a wear mark on the bottom of the tread groove. The wear mark height of a typical car tire is 1.6 mm (this height is also the legal minimum groove depth of the tire), and the wear mark height on the load tire is 2.4 mm.
Some owners think that as long as the tires are not broken, even if the tire treads are worn out, they will continue to be used. Such old tires are actually very dangerous: when it meets a slippery surface, the tread pattern cannot completely drain the water under the tires. , it is easy to cause the vehicle to lose control.
Second, the tire cracks or bulges and other damage
In the course of daily car use, tires may be caught by foreign objects or accidentally hit the road, which can lead to tire damage. Damaged tires include cracks in the tread, bulging of the tread, loss of the tread rubber, serious wear of the sidewalls, and multiple tires being caught by foreign matter. Especially the bulge, the tire will have the danger of bursting at any time. As long as the tires are found to have these damages, the owner will have to go to a professional tire store as soon as possible to check the car's tires and replace them in time.
Third, the expiration of the age of the tire
Even if the car owners usually drive cars, how good the road conditions are, how tire maintenance is in place, and the tires are used for a long time, they will gradually age. The service life of a tire is usually about 5 years, beyond which the tire will begin to age. The main performance of tire aging is surface hardening, followed by cracking. Aging tires lose their elasticity. Continued use will cause tread deformation and risk of puncture.
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