Tire specifications: Specifications are symbolic data of tire geometric parameters and physical properties. Tire specifications are often represented by a set of numbers. The first number indicates the tire section width, and the latter number indicates the rim diameter, both in inches. The letters or symbols in the middle have special meanings: "x" represents high-pressure tires; "R" and "Z" represent radial tires; "one" represents low-pressure tires.

Layer: The tier refers to the nominal number of plies in the rubber layer of the tire, which is not exactly the same as the actual number of plies. It is an important indicator of tire strength. Levels are marked in Chinese, such as level 12; levels are marked in English, such as "14P." R" is the 14-layer pole.

Cord material: Some tires are marked separately, such as "nylon" (NYLON), which is usually marked after the layer; some tire manufacturers mark it after the specifications, expressed by the first letter of Chinese Pinyin , such as 9.00-20N, 7.50-20G, etc., N means nylon, G means steel wire, M means cotton thread, and R means rayon.

Load and air pressure: Generally, the maximum load and corresponding air pressure are marked. The load is in kilograms. The air pressure is the tire pressure in kilopascals.

Rim specification: Indicates the rim specification that matches the tire. Convenient for practical use, such as "Standard Rim 5.00F".

Balance mark: Made of colored rubber in the shape of a mark, printed on the sidewall, indicating that the tire is the lightest here. When assembled, it should be facing the valve to ensure the balance of the entire tire.

Rolling direction: The pattern on the tire is particularly critical for water drainage and anti-skid during driving. Therefore, off-road vehicle tires with asymmetric patterns are often equipped with arrows to mark the rolling direction to ensure the adhesion, anti-skid and other properties of the design. If installed incorrectly, it will be counterproductive.

Wear limit mark: Rubber strips and blocks are used on one side of the tire to mark the wear limit of the tire. Once the tire wear reaches this mark, it should be replaced in time, otherwise the tire will burst midway due to insufficient strength.

Production batch number: a set of numbers and letters indicating the year, month and quantity of the tire. For example, "98N08B5820" means the 5820th tire produced by Group B in August 1998. The production batch number is used to identify the tire's condition and storage time.

Trademark: A trademark is the logo of a tire manufacturer, including trademark words and patterns. It is generally prominent and eye-catching and easy to identify. Most of them are marked in conjunction with the name of the manufacturer.

Other marks: such as product grade, production license number and other ancillary marks. It can be used as reference and information when choosing.

Tire markings are generally relatively standardized. Once clearly identified, you can purchase and use them with confidence.

The following is a common method of expressing tire specifications:

Example: 185/70R1486H

185: Tread width (mm)

70: Aspect ratio (tire height ÷ tire width)

R: Radial structure

14: Steel rim diameter (inches)

86: Load index ( Indicates that the corresponding maximum load is 530 kg)

H: Speed ??code (indicates that the maximum safe speed is 210 km/h