What do you think of the tire safety line?

There are two grooves on the tread of the tire, and you will find a horizontal line in the groove. In fact, if you look closely, you can see that this is a tire safety line.

Tire safety line is the warning line of tire wear to the greatest extent. If the depth of the groove left on the tire tread reaches or is lower than 1.6 mm (there is an indicator indicating the depth in the longitudinal straight groove of the tire tread), the tire must be replaced, otherwise the tire will easily burst due to overheating at ordinary times, and insufficient tire tread depth will lead to the decrease of drainage capacity in rainy days, and the vehicle will slip out of control.

If the tire is aging (for example, there are countless small cracks at the bottom of tread groove or sidewall that will damage the carcass), it is necessary to replace the tire in time, no matter how long it has been used or how much it has worn.

Tire safety line is the biggest warning line for tire wear. If the tire tread wear has reached or fallen below 1.6 mm, the tire must be replaced, and the performance of dry pavement has been greatly reduced. Usually, it is easy to puncture the tire due to overheating, and the drainage capacity is greatly reduced. Driving in rainy days can lead to loss of control.

Therefore, if you want to buy a tire with long working life and good performance, the general tire has an index, which the manufacturer calls the wear index. Those tires with a wear index of more than 300 are economical tires, and tires with a wear index of more than 200 can meet the normal driving life.