List of tire markings

When ordinary car owners buy tires, they rarely care about the dense markings on the tires. These logos represent various parameters of the tire, just like when we usually buy household appliances, there will be manuals, but the tire manuals are printed on the tires. The bunch of letters and numbers on the tire is the tire information, which includes brand, specifications, and some performance parameters, etc.
1. Passenger car tires currently on the market all use the unified car radial tire specification representation method of "XXX/XX RXX". As shown in the figure, 225 represents the width of the tire section of 225mm, and 45 represents The aspect ratio is 45%, R represents the radial tire, and 17 represents the tire inner diameter (hub diameter).
2. When purchasing new tires, be sure to choose the size specifications that correspond to the ones shipped from the factory. Because the original size tires have gone through various experimental tests and reached the best match with the car, so try not to change the tire size.
3. Among the specifications, there is a logo on the back of 225/45ZR17. There is a number and English next to the tire specifications, which represent the tire load index and tire speed level respectively. As the name suggests, the tire load represents the maximum mass that the tire can carry, while the speed level represents the maximum speed that the tire can withstand. However, these two parameters vary according to different manufacturers and models, so when choosing tires, try to choose products with higher load and speed ratings.
4. The wear resistance index is usually printed numerically on the side of the tire. The larger the number, the more wear-resistant the tire is. The wear resistance index of general household car tires is in the range of Treadwear 240-400, and various manufacturers label these tires more for comfort, silence, wear resistance, etc. However, the wear resistance index of performance tires with stronger road grip is usually 200 and below.
5. M+S and outside logo
The M+S or M/S logo on the sidewall indicates that this tire can be used in snow and mud conditions. Install the side marked with the Outside logo facing outward.
6. Tire date
Manufacturers generally mark the production date of the tire on the side of the tire. If the four-digit number "1211" is shown, it represents the production date of the tire. The "19" at the back represents the year of production, and the "14" at the front represents the production year. represents the week, so the tires in the picture were produced in the 14th week of 2019. Generally, the storage time of tires should not exceed 3 years, because the time spent on installation must also be taken into account.
7. Snowflake logo
The three-peak snowflake logo is the European Union's performance certification for tires that are suitable for snow applications and guarantee winter performance. The three-peak snowflake logo on the sidewall also shows the ice and snow performance of this tire.
8. 3T Index
TREADWEAR (wear resistance index), TRACTION (traction capacity), TEMPERATURE (temperature index), and the following numerical values also represent its quality.
9. Special identification
These tires can be identified by the "RUN FLAT" mark on the sidewall and can still travel a certain distance even if they lose pressure.