Tire basics

Date of production of the tire

The production date of the tire is 4 digits, the first 2 digits indicate the number of production weeks of the tire, and the last 2 digits indicate the year. The tire production date in the picture is 20th week of 2018. The life expectancy is generally about 5 years. When buying tires, you must see the production date and avoid buying stock tires.

Tire mounting direction

Look at the markings of the tires. On the tires with asymmetrical patterns, there will be an English mark "outside" (outside) or an arrow pointing (pointing to the front of the vehicle, the direction of the vehicle's forward direction); without marking or pointing to the arrow, it is recommended to mark the side of the production date. Mounted on the outside.

Tire mounting direction mark

Directional tires can not be reversed. In addition to dealing with various dry and wet road conditions, the tires can quickly discharge rainwater attached to the surface of the tires in rainy weather, resulting in better adhesion to the ground. Not effective, in addition to accelerate tire wear and increase vehicle fuel consumption.

Tire wear marking line

The service life of automobile tires is generally 5 years or 80,000 kilometers, depending on the use. We have already talked about how to look at the production date. Now let's look at how to judge that the tire wear has reached the limit. As shown in the figure, the technician's finger is the wear marking line of the tire. If the tire has to be worn to the position of the marking line, the tire must be replaced with a depth of more than 1.6 mm.