According to national standards, the production number, manufacturer's mark, size specification, level, maximum load and corresponding air pressure, carcass cord Hanyu Pinyin code, installation requirements and driving direction signs must be marked on both sides of the tire.
The carcass cord material is expressed in Chinese Pinyin.Such as M-cotton cord, R-rayon cord, N-nylon cord, G-steel cord, ZG-steel radial cordtire.
tireThe side is marked with symbols such as "△", "-", "□" or written with "W", "D" and other words, indicating that the lightest part of the tire is installed.Inner tube, Should beValveAlign the mouth with the symbol and install it to make the weight around the tire average and keep the tire stable when it rotates at high speed. For example, the arrow "" indicates a directional tire. Install in the direction of the arrow as the direction of rotation.
High-pressure tires are represented by D5B, D represents the nominal outer diameter of the tire, and B is the cross-sectional width of the tire, in inches. "X" stands for high-pressure tires.
Low pressure tires are represented by Bd, B is the tire section width, d is the rim diameter, and "-" represents low pressure tires. Since the section B is approximately equal to the section height H, the installed rim size d can be calculated as d=D-2B. For example, Audi cars use tires of type 185/80R1490S.
Tire section width and height ratio (aspect ratio) are two important indicators to describe tire size.
The cross-sectional width of the tire refers to the maximum distance between the two outer sides after the tire is inflated according to the regulations. It is generally divided by 5mm as a unit, but the cross-sectional width tolerance of the new tire is 63%. The section width refers to the half of the difference between the outer diam
According to national standards, the production number, manufacturer's mark, size specification, level, maximum load and corresponding air pressure, carcass cord Hanyu Pinyin code, installation requirements and driving direction signs must be marked on both sides of the tire.
The carcass cord material is expressed in Chinese Pinyin.Such as M-cotton cord, R-rayon cord, N-nylon cord, G-steel cord, ZG-steel radial cordtire.
tireThe side is marked with symbols such as "△", "-", "□" or written with "W", "D" and other words, indicating that the lightest part of the tire is installed.Inner tube, Should beValveAlign the mouth with the symbol and install it to make the weight around the tire average and keep the tire stable when it rotates at high speed. For example, the arrow "" indicates a directional tire. Install in the direction of the arrow as the direction of rotation.
High-pressure tires are represented by D5B, D represents the nominal outer diameter of the tire, and B is the cross-sectional width of the tire, in inches. "X" stands for high-pressure tires.
Low pressure tires are represented by Bd, B is the tire section width, d is the rim diameter, and "-" represents low pressure tires. Since the section B is approximately equal to the section height H, the installed rim size d can be calculated as d=D-2B. For example, Audi cars use tires of type 185/80R1490S.
Tire section width and height ratio (aspect ratio) are two important indicators to describe tire size.
The cross-sectional width of the tire refers to the maximum distance between the two outer sides after the tire is inflated according to the regulations. It is generally divided by 5mm as a unit, but the cross-sectional width tolerance of the new tire is 63%. The section width refers to the half of the difference between the outer diameter of the tire and the nominal diameter of the rim after the tire is inflated. Tire aspect ratio (H/B) is the ratio of tire section height H to section width B, expressed as a fraction after the diameter is rounded. Generally it is a multiple of 54. For example, car radial tires are divided into 60, 65, 70, 75, and 80 series.
The specifications of foreign tires are diversified, and the specifications of Chinese tires are mainly divided into British and metric specifications.
Inch specification mark:
Generally, common-section truck tires and passenger car bias tires use this mark. It is mainly expressed in the following section.
A The nominal section width of the tire, in in
B Tire structure mark
C Nominal diameter of rim, in in
Level D
The structural mark of radial tires is represented by "R", and the structural mark of bias tires is represented by "-". Tier level refers to the specific strength mark that the tire bears the maximum load. It does not necessarily represent the actual number of plies. For example, a 9.00 gauge 12-level tire can have several actual layers, but the maximum load is 2050kg.
For example: 6.5R 16 6P.R.
6.5: Nominal tire section width (6.5 in)
R: Radial tire mark
16: Nominal diameter of rim
6P.R.: Tire level is 6 (maximum load is 635 kg and corresponding air pressure is 3.50kg)
Metric specification mark:
Generally, radial car tires use this expression, which includes the following:
A Nominal section width of tire, in mm
B Tire nominal aspect ratio
C speed symbol
D Tyre structure logo
E The nominal rim diameter unit is inch
The nominal tire aspect ratio refers to the ratio of the cross-sectional height of the tire mounted on the theoretical rim to the cross-sectional width.
Example: 195/60 HR 14
195: Nominal tire section width (195mm)
60: Tire nominal aspect ratio (H/B≈0.60)
H: Speed symbol (210km/h)
R: Radial tire mark
14: Nominal rim diameter (14in)
In order to unify the International Organization for Standardization (ISO), the new tire specification mark is composed of the following content:
① Nominal section width of tire, unit is (mm)
② Nominal aspect ratio of tire
③ Tire structure mark
④ Nominal diameter of rim, in in
⑤ Load index
⑥ Speed symbol
E.g. 195/60 R 14 85 H
195: Nominal tire section width (195mm)
60: Tire nominal aspect ratio (H/13≈0.60)
R: Radial tire mark
14: Nominal rim diameter (14in)
85: Load index (515kg)
H: Speed symbol (210km/h)
All tires for domestic cars are 185/80R 14 90S radial tubeless tires for Hongqi vehicles; 165/20R14 or 165/70 R13 radial tires for Fukang vehicles; Cherokee tires are marked with P205 (or 215, 225)/ 75R15 , Where P represents the vehicle used, 205 represents the cross-sectional width (mm), 75 represents the aspect ratio, R represents the radial tire, and 15 represents the rim diameter (inch).
