Why Does Car Tire Pressure Decrease on Rainy Days?
1 Answers
Tire pressure in cars decreases on rainy days because it is affected by temperature changes. The lower temperature during rainy weather causes the tire pressure to drop. Conversely, during hot summer days, tire pressure tends to increase, similar to the principle of thermal expansion and contraction. Hazards of Low Tire Pressure: Increased friction coefficient with the road surface, leading to higher fuel consumption; Heavier steering wheel and increased tendency for the vehicle to drift, which are factors detrimental to driving safety; Greater movement of various parts of the tire, causing excessive rolling and abnormal heat generation; Reduced functionality of the cord and rubber, leading to delamination or cord breakage, and excessive friction between the tire and the rim, resulting in damage to the bead area and abnormal wear; Exponentially increased friction between the tire and the ground, causing a sharp rise in tire temperature, softening of the tire, and a significant drop in strength. High-speed driving under such conditions may lead to tire blowouts; Increased deformation of the tire body, making the tire sidewalls prone to cracking, along with flexing movements that cause excessive heat, accelerating rubber aging, fatigue of the cord layers, and cord breakage. It also enlarges the tire's contact area with the ground, hastening wear on the tire shoulders.
