Tires are an important part of automobiles. There are more than 10 kinds of markings on automobile tires. The correct identification of these marks is very important for the selection, use, and maintenance of tires, which is of great significance for ensuring the safety of driving and prolonging the service life of tires.

Tire specification Tire specification: The specification is the sign data of the geometric and physical properties of the tire. The tire size is often represented by a set of numbers. The previous number represents the width of the tire section, and the latter number represents the rim diameter, all in inches. The middle letters or symbols have special meanings:
Tire structure: R" for radial tires, "D", "one" for biased tires.
Others: "XL" indicates that the texture reinforces the tire locally, and "TG" and "NHS" indicate the tire level.

Hierarchy: Tier refers to the nominal number of layers in the tire rubber layer, which is not exactly the same as the actual number of layers, and is an important indicator of tire strength. Levels are marked with Chinese characters, such as 12 levels, and English symbols, such as “14P.R”, are 14 levels.

Cord material cord material: Some tires are individually marked, such as "nylon" (NYLON), generally marked after the level; the world's tire manufacturers are marked after the specification, and the first letter of the pinyin is used, such as 9.00- 20N, 7.50-20G, etc., N means nylon, G means steel wire, M means cotton, and R means rayon.

Load and air pressure load and air pressure: generally indicate the maximum load and corresponding air pressure, the load is in units of “kg”, and the air pressure is the tire pressure in units of “kilopascals”.

Rim size rim specifications: Indicates the rim size used with the tire. Easy to use, such as "Standard rim 5.00F".

Balance sign Balance sign: Marked with colored rubber, printed on the side of the tire, indicating that the tire is lightest here, and should be facing the valve when assembling to ensure the balance of the entire tire.

Rolling Direction Scrolling direction: The pattern on the tire is particularly critical for the running water drain. Therefore, an asymmetric cross-country vehicle tire is commonly used with the arrow sign assembly scroll direction to ensure the design's adhesion, non-slip performance. If you install the wrong thing, it is counterproductive.

Wear limit mark wear limit mark: The tire side with a rubber strip, block marked tire wear limit, once the tire wear reaches this mark position should be replaced, otherwise it will be due to lack of strength in the mid-flat tire.

Production lot number Production lot number: It is marked with a set of numbers and letters to indicate the year and month of manufacture of the tire. For example, “98N08B5820” indicates the 5820th tire produced in Group B in August 1998. The production lot number is used to identify the age and storage time of the tire.

Trademarks Trademarks: Trademarks are trademarks of tire manufacturers, including trademark texts and designs, which are generally prominent and eye-catching and easy to identify. Most of them are marked with the name of the manufacturer.

Other markings Other markings: such as product grade, production license number, and other ancillary symbols. Can be used as reference material and information.
Tire markings are generally marked with more standardized markings and can be purchased and used with confidence.

The following is a common tire specification method:
Example: 185/70R1486H
185: tread width (mm)
70: Flat ratio (tire height, tire width)
R: Meridian Structure 14: Wheel Diameter (inch)
86: Load Index (represents the corresponding maximum load of 530 kg)
H: speed code (indicating that the maximum safety speed is 210 km/h)
Speed ​​code maximum speed (km/h)
130 N:140 P:150 Q:160 R:170 S:180 T:190 U:200 H:210 V:240 W:270 Y:300
Load code limit 80:450kg 81:462kg 82:475kg 83:487kg 84:500kg 85:515kg 86:530kg 87:545kg 88:560kg 89:580kg 90:600kg