Below what tire pressure is it unsafe to drive?

[Ellie]

Tire pressure below 1.7bar is unsafe for driving. Vehicles are equipped with tire pressure monitoring systems, which typically trigger an alarm when the tire pressure drops below 1.8bar. Therefore, this value is also applicable to tires without pressure sensors, and it is recommended not to go below this value. Hazards of low tire pressure: Increased friction coefficient with the road surface, leading to higher fuel consumption; Causes heavy steering and potential drifting, which are factors detrimental to driving safety; Increases movement in various parts of the tire, resulting in excessive rolling and abnormal heating; Reduces the functionality of the cords and rubber, leading to delamination or cord breakage, excessive friction with the rim causing damage to the bead area, and abnormal wear; Multiplies the friction between the tire and the ground, causing a sharp rise in tire temperature, softening of the tire, and a rapid decrease in strength. High-speed driving under these conditions may lead to a blowout; Increases tire body deformation, making the tire side prone to cracking, while generating flexing movements that cause excessive heat, accelerating rubber aging, fatigue in the cord layers, and cord breakage. It also increases the tire's contact area with the ground, speeding up wear on the tire shoulders.