1. Tread depth
胎面花纹的厚度应大于1.6毫米。如果在低摩擦的潮湿路面上行驶，请确保胎面花纹的厚度是上述值的两倍。尽管您可以从专家那里学习并购买量规来测量胎面花纹的厚度，但是老司机经常使用流行的方法来估算胎面花纹的厚度。费用为$ 1。向上插入胎面槽，因为从边缘到顶部的距离为1-2 mm。此时，您可以看到胎面花纹的总厚度不足。
The thickness of tread pattern shall be greater than 1.6 mm. If driving on wet roads with low friction, make sure that the tread pattern thickness is twice the above value. Although you can learn from experts and buy gauges to measure tread thickness, older drivers often use popular methods to estimate tread thickness. The cost is $1. Insert tread groove upwards as the distance from edge to top is 1-2 mm. At this point, you can see that the total thickness of the tread pattern is insufficient.
2. Pattern wear indicator line
Compared with the old products in the past, the new tire design is more humanized: tread pattern wear indicator. If the tire is new or has low wear, you can hardly see these indications, but when the wear reaches a certain level, you will find these lines hidden in the tread groove. The tread pattern wear indicator line is a flat rubber strip embedded vertically into the vertical tread groove of the tread. If the tyre is checked and occasionally one or two indicator lines are found, the tread pattern will become significantly thinner. In this case, be careful when driving on slippery roads. If you can clearly see almost all the indicator lines on the tire, it means that you need to change the tire as soon as possible.
3. Tire sidewall crack
Not all tire problems are concentrated on the tread, and there are also some problems with the sidewall of the tire. Check the sidewall of the tire for obvious cracks or cuts. These small grooves indicate that the tire may leak in the future and, worse, burst. These tire failures are something we need to avoid. Therefore, if the cracks on the sidewall of the tire appear to be more severe, take the vehicle to the repair shop and replace the tire as soon as possible.
4. Tire expansion and expansion
Due to the lack of strength, the outer surface of a tire may be raised and blistered more than the surface of a normal tire. Tires face a similar situation. If you fail to deliver it to the repair shop in time and find a tire failure, parts with insufficient tread strength may burst suddenly at high speed. Tire rupture can even cause serious injury to the driver and passengers.