What is Tire Pressure?
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Tire pressure, strictly speaking, refers to the air pressure inside a tire. Introduction to Tire Pressure: Tire pressure is an indicator of a vehicle's load capacity. The load capacity of a vehicle depends on the level of tire pressure. According to the relationship between a tire's load index, tire pressure, and load capacity, the higher the tire pressure, the greater the load capacity; the lower the pressure, the smaller the load capacity. For example, a tire with a load index of 80 has a load capacity of 300 kg at a pressure of 0.15 MPa, while at 0.25 MPa, the load capacity increases to 450 kg. This demonstrates the significant impact of tire pressure on a vehicle's load capacity. Hazards of Abnormal Tire Pressure: Pressure is the lifeblood of a tire; both excessively high and low pressures can shorten its lifespan. If the pressure is too low, the tire body deformation increases, cracks are more likely to appear on the sidewalls, and flexing movements occur, leading to excessive heat generation, which accelerates rubber aging, fatigue of the cord layers, and breakage of the cords. Low pressure also increases the tire's contact area with the ground, accelerating wear on the tire shoulders. If the pressure is too high, the tire cords undergo excessive stretching and deformation, reducing the tire body's elasticity. This increases the load on the vehicle during driving, and impacts can cause internal cracks or even blowouts. Additionally, excessive pressure accelerates wear on the tire tread and reduces its resistance to punctures.
