What is the normal tire pressure range for highway driving?
1 Answers
According to the international GBT2978-2008 standard requirements, the standard tire pressure for highway driving is 2.4-2.5bar for standard tires, and 2.8-2.9bar for reinforced tires. The maximum pressure should not exceed 3.5bar. The hazards of excessive tire pressure are as follows: Reduced tire friction and adhesion, affecting braking performance; Causes steering wheel vibration and deviation, reducing driving comfort; Accelerates wear on the central tread pattern, shortening tire lifespan; Increases vehicle vibration, indirectly affecting other components' longevity; Overextends tire cords, reducing elasticity and increasing driving load; Decreases puncture resistance, making tires more vulnerable to sharp objects like nails or glass, potentially causing internal cracks, blowouts, or tire bursts. Insufficient tire pressure increases friction with the road surface, leading to heavy steering, increased fuel consumption, and deviation, all detrimental to driving safety; Excessive movement of tire components causes abnormal heat generation; Weakens cord and rubber functionality, leading to delamination, cord breakage, or rim friction damage; Multiplies ground friction, rapidly raising tire temperature and softening rubber, drastically reducing strength - potentially causing blowouts at high speeds; Increases tire body deformation, causing sidewall cracks and flexing that generates excessive heat, accelerating rubber aging, cord fatigue, and tread shoulder wear.