Tire specifications

Tire specification: 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 letter or symbol has a special meaning: "x" indicates a high pressure tire; "R" and "Z" indicate a radial tire; "1" indicates a low pressure tire.

Common tire specification method 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; with English symbols, such as "14P.R", that is, 14 layers.
Cord material: Some tires are individually marked, such as "nylon" (NYLON), and are generally marked after the hierarchy. The world's tire manufacturers are marked with the first letter of the alphabet, 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: Generally indicate the maximum load and corresponding air pressure, the load is “kg”, and the air pressure is the tire pressure, and the unit is “KPa”. Rim Size: Indicates the rim size used with the tire. Easy to use, such as "Standard rim 5.00F".
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: The pattern on the tire is particularly critical for the drainage slip during driving, so the off-road vehicle tires with asymmetric pattern are often used with arrow signs to assemble the rolling direction to ensure the design's adhesion, anti-slip and other properties. If you install the wrong thing, it is counterproductive. 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: 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 are signs 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 tags: such as product grade, production license number and other ancillary signs. 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)