Knowledge of tire structure and wheel maintenance

As the only part of the car in contact with the ground, the tire provides the vehicle with shock absorption and impact resistance in addition to transverse and longitudinal grip。From the outside, the tires look like they're made of rubber。But in fact, today's tire is a high-tech product, including a variety of high-end technologies and complex structures。Let us understand the basic structure of the tire and how to use the right tire。
Tire structure analysis:
The cross-sectional structure of the tire can be divided into four parts: tread, shoulder, edge, circle of the tire and tire。Each part has its own function。The main contact ground tread, tire shoulder and bead support, bead and rim contact plays a sealing role。

More than just a ball of rubber, tires are actually made up of multiple layers stacked with different materials - tread, cladding, steel strap layer (2nd layer), stress absorbing rubber, tire cord layer, and lining。First, we talk about "steel tape."。The layer is composed of two layers of steel wire superimposed, the two layers of steel wire at a certain Angle, its role is to improve the tread stiffness, so that the tire can cope with the uneven impact of the road surface。In order to prevent corrosion of the wire, there will be a covering layer outside the wire layer."。The "tire cord layer section" runs through the entire tire to provide support for the tire。The airtight layer is located in the inner tire of the tire and extends to the tire to mainly play a sealing role。

Often hear about the high aspect ratio, we can clearly understand from the figure above how the parameters are obtained。The smaller the aspect ratio, the thinner the tire looks."。The small width ratio of tires is the trend, the reason is to adapt to the needs of new cars with high output torque。
For ordinary users, we only need to care about the size parameters of the tire。For example: 225/40 R17 94Y, 225/40 denotes the aspect ratio (also known as the flat ratio), R denotes the tire, 17 denotes the rim diameter, 94 denotes the load index, and y denotes the speed class。Load indicators and specific values of rated speed can be associated with the table。

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