What rules are used to classify the types of tires

Jan 05,2019


When it comes to the types of tires, there are actually many different ways to classify them: there are those classified by car type, those classified by use, those classified by size, those classified by tread, and those classified by construction.

Classification by car type

Tires are classified by car type and can be roughly divided into 8 types. Namely: PC - car tires; LT - light truck tires; TB - truck and bus tires; AG -Agricultural tires; OTR - engineering vehicle tires; ID - industrial vehicle tires; AC - aircraft tires; MC --Motorcycle tires.

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Classification of tires by use

Tires are classified according to their use, including heavy-duty tires, passenger tires and mining tires. In addition to the specification size marked on the tire wall, the load carrying tires must also be marked with the number of ply ratings. However, it is necessary to tell you here that the number of ply levels of the load-carrying tires does not refer to its actual number of ply, but rather refers to the use of high-strength material cord to make the carcass of the tire, its load performance is equivalent to the number of layers of tire cord fabric with cotton cord carcass production. This is because cotton cord was first used to make the carcass cord, therefore, the international practice that the cotton cord ply as the benchmark for the number of tire ply. The load capacity of a tire varies from ply to ply. Even if the same specifications of the tire, because of its ply level is different, its load capacity is not the same, so, different ply tires, can not be used in the same axle, otherwise, in the high-speed driving and load will occur under the circumstances of the danger. For example: 900-20 tires (16-ply) for liberation vehicles can not be used with 900-20 tires (14-ply) on the same axle, because they have different plies and different loads, and it is easy to be dangerous after mixing.

Light trucks or vans with light radial tires should be added to the back of the tire model letter "C", in order to distinguish with the car with radial tires. Such as: Jinbei van with tires 185SR14C, which the "C" that is, this tire for light-duty tires. The U.S. standard provides: passenger car tires, to be used in front of the tire specifications with the letter "P" to indicate. Such as: Cherokee with P215/75R15 tires, which the "P" that is, this tire for passenger tires. There are many drivers do not understand the meaning of this "P" word, a superstitious it, that the United States on the car must be used with "P" tires, therefore, when changing tires, no "P" words Therefore, when changing tires without the word "P" tires do not dare to use, often making some jokes. Some tire dealers, after encountering drivers with this mentality, will sell tires with "P" at a very high price. In fact, the "P" word is only a provision of the United States, for example, China's Shanghai Hui Li Tire Factory production of tires 185/70R14 tires, to be exported to the United States to the Ford plant produced by the Tianba car supporting the use of, then, according to U.S. regulations, the Shanghai Hui Li factory production of 185/70R14 tires in front of the need to add a "P" word, to show that this tire is a passenger tire. Therefore, when you change tires, do not be bluffed by the "P" word. On the contrary, this "C" word. You have to pay attention to, and, if your car belongs to the light goods vehicles that must insist on doing no "C" word tires do not change. Said before the gold cup van with radial 185SR14C tires, and Audi sedan with radial 185SR14 tires, from the point of view of the specifications of the tire, there is no difference, but because the gold cup van with 185SR14C tires with a "C" word and Audi sedan with a 185SR14 tires for the Audi sedan do not have this "C". Therefore, their air pressure, load, etc. are very different. Light goods vehicles once replaced with no "C" word tires, we must measure whether the tires can carry the car's own weight and expected to carry the goods, if the tire's limited capacity is less than the car's own weight and the quality of the goods to be loaded, must not be used, or in the passenger or loaded with goods, the heart to be counted. Otherwise, like in their own cars and four untimely bombs, I do not know when the quality of the load more than the tire limit, the speed reaches a certain level, it will occur after the tire blowout overturning and other vicious accidents. Therefore, please pay special attention to the majority of drivers and friends, if your car needs to be used with "C" word tires, it is best not to let this "C" word no more.