What is the appropriate tire pressure for SUVs in winter?
1 Answers
SUV winter tire pressure should be based on the standard tire pressure of the car tires, with an appropriate increase of about 0.2bar. According to the international GBT2978-2008 standard, the standard tire pressure is 2.4-2.5bar; reinforced tire pressure is 2.8-2.9bar; the maximum pressure should not exceed 3.5bar. Hazards of excessive tire pressure: Tire friction and adhesion will decrease, affecting braking performance; Causes steering wheel vibration and deviation, reducing driving comfort; Accelerates wear on the central tread pattern of the tire, reducing tire lifespan; Increases body vibration, indirectly affecting the lifespan of other components; Causes excessive stretching deformation of tire cords, reducing tire elasticity and increasing the load on the car during driving; Reduces puncture resistance. When encountering sharp objects like nails or glass on the road, they can easily penetrate the tire, causing internal cracks and blowouts. Hazards of insufficient tire pressure: Increases friction coefficient with the road surface, leading to higher fuel consumption; Causes heavy steering and deviation, posing safety risks; Increases movement of various parts of the tire, causing abnormal heating due to excessive rolling; Reduces the functionality of cords and rubber, leading to delamination or cord breakage and excessive friction with the rim, causing damage and abnormal wear to the bead area; Multiplies friction between the tire and the ground, rapidly increasing tire temperature, softening the tire, and drastically reducing its strength. High-speed driving may lead to blowouts; Increases tire deformation, making the sidewalls prone to cracks and causing flexing movements, leading to excessive heat, rubber aging, cord fatigue, and breakage, as well as increasing the tire's contact area and accelerating shoulder wear.
