What is the normal range for tire pressure on highways?
1 Answers
According to the international GBT2978-2008 standard, the recommended tire pressure for standard tires when driving on highways is 2.4-2.5 bar, while reinforced tires should be inflated to 2.8-2.9 bar. The maximum tire pressure should not exceed 3.5 bar. The hazards of over-inflated tires are as follows: Reduced friction and adhesion of the tires, affecting braking performance; causes steering wheel vibration and deviation, reducing driving comfort; accelerates uneven wear of the central tread pattern, shortening tire lifespan; increases vehicle vibration, indirectly affecting the lifespan of other components; overstretches the tire cords, reducing elasticity and increasing the load on the vehicle during driving; decreases puncture resistance. When encountering sharp objects like nails or glass on the road, the tire is more prone to punctures, and impacts can cause internal cracks and blowouts, leading to tire bursts. The hazards of under-inflated tires are as follows: Increases friction with the road surface, leading to higher fuel consumption; makes the steering wheel heavy and prone to deviation, creating unsafe driving conditions; increases movement in various parts of the tire, causing abnormal heat due to excessive rolling; weakens the function of cords and rubber, leading to delamination or cord breakage, and excessive friction with the rim, damaging the bead area and causing abnormal wear; multiplies friction with the ground, rapidly raising tire temperature, softening the tire, and drastically reducing its strength. High-speed driving may result in tire bursts; increases tire deformation, making the sidewalls prone to cracks and generating flexing movements, leading to excessive heat, rubber aging, cord fatigue, and breakage, while also increasing the tire's contact area with the ground, accelerating shoulder wear.
