From the side pattern of the car tire, you can usually find a small triangular arrow mark. Follow the mark to find the raised mark of the groove on the side of the car tire tread. This raised mark is the tire's Wear marks. When the tire tread is below 1.6 mm, which is generally below the wear mark, it basically means that the tire is about to be scrapped and the owner needs to replace the tire in time.

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Continuing to use the tires when their tread patterns are excessively worn will pose a great safety risk. Excessive tire wear will severely reduce the grounding force on dry ground. Especially the front wheels generally wear faster than the rear wheels, which can easily lead to understeer, also known as head pushing, which seriously affects driving safety. At the same time, the drainage capacity of the tire depends entirely on the tread pattern. If the tread pattern is too shallow, it will easily slip and cause loss of control when driving in rainy days.

It is worth noting that tires are rubber products, which will age over time. The main manifestation is that there will be many small cracks on the sidewall of the tire. If the small cracks have damaged the carcass, , at this time, regardless of whether the tire wear reaches the wear mark, it needs to be replaced. Otherwise, continuing to use aging tires may run the risk of puncture.