At what tire pressure should you not drive?

[MaciLynn]

Tire pressure below 1.7 bar is unsafe for driving. The normal tire pressure for most passenger cars typically ranges between 2.1 and 2.8 bar. Insufficient pressure increases tire body deformation, leading to cracks on the sidewalls and causing flexing movements that generate excessive heat. This accelerates rubber aging, fatigue in the cord ply, and breakage of the cords, while also enlarging the tire's contact area and accelerating shoulder wear. Precautions for inflating tires: 1. Ensure safety during inflation by regularly checking pressure with a gauge to avoid overinflation and tire bursts; 2. Allow tires to cool down after driving before inflating, as driving increases tire temperature and affects pressure; 3. Inspect the valve stem—if the valve stem and core are uneven, protruding, recessed, or have other defects, it may hinder inflation and pressure measurement; 4. Maintain cleanliness during inflation; the air used must not contain moisture or oil to prevent deterioration and damage to the inner tube rubber.