Is a tire pressure of 2.2 bar normal in winter?
1 Answers
Winter tire pressure of 2.2 bar is not normal. According to the provisions and requirements of the international GBT2978-2008 standard, the standard tire pressure is 2.4-2.5 bar, and it is appropriate to increase it by about 0.2 bar in winter. Therefore, 2.2 bar is below the minimum value of the standard tire pressure, so it is not normal. Hazards of low tire pressure: The friction coefficient with the road surface will increase, leading to higher fuel consumption; It can cause the steering wheel to feel heavy and make the vehicle prone to drifting, which are factors detrimental to driving safety; It increases the movement of various parts of the tire, leading to excessive rolling and abnormal heating of the tire; It reduces the function of the cord and rubber, causing delamination or cord breakage, and excessive friction with the rim, resulting in damage and abnormal wear at the bead area; The friction between the tire and the ground increases exponentially, causing the tire temperature to rise sharply, the tire to soften, and its strength to drop drastically. High-speed driving under these conditions may lead to a tire blowout; It increases the deformation of the tire body, making the tire side prone to cracking, and generates flexing motion, leading to excessive heat, promoting rubber aging, fatigue of the cord layer, cord breakage, and also increases the tire's contact area with the ground, accelerating shoulder wear.
