What Does Tire Pressure Mean?
2 Answers
The tire pressure of a car refers to the air pressure inside the tire. According to the international GBT2978-2008 standard, the normal tire pressure for different types of tires is as follows: standard tires: 2.4-2.5bar; reinforced tires: 2.8-2.9bar; maximum pressure: should not exceed 3.5bar. Hazards of excessive tire pressure: The friction and adhesion of the tire will decrease, affecting braking performance; It can cause steering wheel vibration and deviation, reducing driving comfort; Accelerates localized wear of the tread pattern in the center of the tire, shortening tire lifespan; Increases vehicle vibration, indirectly affecting the lifespan of other components; Excessive stretching of tire cords, reducing elasticity and increasing the load on the vehicle during driving; Decreases puncture resistance. Sharp objects like nails or glass can more easily penetrate the tire, leading to internal cracks or blowouts. Hazards of insufficient tire pressure: Increases friction with the road surface, leading to higher fuel consumption; Causes heavy steering and deviation, compromising driving safety; Increases movement of tire parts, leading to abnormal heat due to excessive rolling; Reduces the functionality of cords and rubber, causing delamination or cord breakage, and excessive friction with the rim, damaging the bead area and causing abnormal wear; Dramatically increases friction with the ground, rapidly raising tire temperature, softening the tire, and drastically reducing strength. High-speed driving may lead to blowouts; Increases tire deformation, making the sidewalls prone to cracks and generating flexing motion, leading to excessive heat, rubber aging, cord fatigue, and breakage, while also increasing the tire's contact area and accelerating shoulder wear.
Tire pressure refers to the degree of air compression inside the tire, simply put, whether the tire is inflated enough. I think this is quite crucial. Having driven for many years, I've encountered issues a few times—when the pressure is too low, the car feels like it's swaying like a boat, and the braking distance increases, which is quite scary; when it's too high, the tires become stiff, and you can feel every bump, making the ride very rough. I usually adjust it according to the recommended values on the side of the car door, measured in bar or psi. The pressure varies significantly with weather changes, especially dropping quickly in winter when the car is cold, and expanding easily in summer due to high temperatures. Therefore, it's important to check regularly. Now, I use a mobile app to record tire pressure, checking it once a month. Gas stations offer free air refills, which is very convenient. Developing this habit not only helps avoid safety hazards but also saves fuel costs and extends tire life. Checking before long trips gives extra peace of mind.
