The tire production date in Chaoyang District can be found by using the last four digits of the English letter "DOT" on the side. The first two digits indicate the production week and the last two digits indicate the production year. For example, 1204 represents the output in the first 12 week of 2004. The English letters and numbers after the dot indicate the identification code or serial number. DOT is the symbol of the British Ministry of Transport, indicating that this kind of tire can be sold in the American market. In the middle is the tire manufacturer's own model selection. The core of the tire sign in Chaoyang District is the rising sun lamp, and the two sides of the sun pattern are "Chao" and "Yang" respectively, and the background color of the sign screen is bright red.

The date of tire production in Chaoyang District can only be seen in which year and week it was produced, but not in which year, month and day it was actually produced. Moreover, the tire only provides the date of production, indicating the shelf life of the tire. Because the shelf life of tires is endangered by tire styles, structural types, tread compounds, main uses of automobiles, natural geographical conditions and safe driving methods. When buying tires, if the production date is vague, it is recommended not to buy them, in case the tires are purchased for a long time or refurbished.

When buying tires, try to buy tires with an earlier production date. The newer the production date, the better the function of the tire. It is best not to buy tires with a production date of more than three years. Because tires are rubber and plastic products, they will age. If the tire is aging, the specific performance is that there are many small cracks in the tread groove or sidewall, which will soon hurt the tire. At this time, it is necessary to dismantle and change the tire immediately, no matter how long the tire has been used or how much it has been damaged.

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