Truck tires are very common car parts for everyone, and almost everyone has seen them. But how much do you know about tires? Below, I will talk to you about the marking method and type representation method for truck tires. Let's take a photo of the tire for everyone to understand later.

1. Tire Specification Marking Method for Truck Tires. As a standardized and serialized product, tires have markings on the side that reflect their type, specifications, basic performance parameters, and main dimensions. Generally, these markings include the tire section width B, the nominal diameter d of the rim, and the tire structure. Taking EQ1118GA tire markings 9.00-20 16PR as an example to illustrate its meaning: the first part of the number 9.00 represents the nominal width B of the tire cross-section (in inches), the second part of the number 20 represents the nominal diameter d of the wheel rim (in inches), and the third part of 16PR represents the ability to withstand a load equivalent to 12 layers of cotton cord. If there is no R between the numbers in the first and second parts, it indicates a diagonal tire, and if there is R, it indicates a radial tire. As shown in the figure

Tire section size

B - nominal width of tire cross-section; H - nominal height of tire cross-section; D - nominal diameter of the wheel rim; OD т— The nominal outer diameter of the tire; R - static radius of the tire; B - wheel flange height; D - Outer diameter of the wheel (steel ring); S т— Static deformation 2. According to the Chinese standard (GB/T 2978-1997), there are 11 types of truck tires. For micro and light truck tires, there must be a ULT (micro tire) and LT (light tire) mark at the rear of the mark, while medium and heavy truck tires do not have this mark. a. Marking of ordinary section diagonal tires for micro trucks, such as 4.50-12 ULT. b. Marking of ordinary section diagonal tires for light trucks, such as 6.00-16 LT. c. Marking of ordinary section radial tires for light trucks, such as 6.00 R 16 LT. In the markings of the above specifications, the numbers 4.50 and 6.00 represent the nominal height of the wheel rim section (in); The numbers 12 and 16 represent the nominal diameter of the wheel rim (in). d. Marking of diagonal metric series tires for light trucks, such as 215/70 14 LT. e. Marking of radial series tires for light-duty trucks, such as 215/70 R 14 LT. In the above two specifications, the number 215 represents the nominal width of the tire cross-section (mm),/70 represents the nominal aspect ratio of the tire, and the number 14 represents the nominal diameter of the rim (in). f. Markings for metric series tires without inner tubes for mid size trucks, such as 245/75 22.5. g. Markings for metric series tires without inner tubes for mid size trucks, such as 315/75 R 22.5 154/149 L. h. Marking of ordinary cross section diagonal tires for medium and heavy-duty trucks, for example: 9.00-20. i. Marking of ordinary radial tires for medium and heavy-duty trucks, such as 9.00 R 20.

j. Marking of radial tires without inner tubes for medium and heavy-duty trucks, such as 8 R 22.5.

k. Marking of radial tubeless metric series tires for medium and heavy-duty trucks, such as 245/75 R 22.5. The numbers 22.5 in f, g, j, and k above represent the nominal diameter (in) of the tubeless rim, 154/149 in item g represents the load index (single/twin), and L represents the speed level code.

Radial tubeless tire

Have you gained a deeper understanding of truck tires after reading today's content? By observing and thinking more in daily life, and being a conscientious person, we will gain a lot.