What is the optimal tire pressure for small cars?

[McLily]

Generally, the standard factory-set tire pressure range for passenger cars is between 2.3-2.5 bar, with a marked maximum tire pressure of 3.5 bar. The actual maximum pressure tolerance is at least above 4.5 bar. Hazards of excessive tire pressure: Excessive tire pressure reduces the friction and adhesion of car tires, prolongs braking distance, and increases the risk of rear-end collisions. High tire pressure can cause steering wheel vibration and deviation during vehicle operation, affecting driving comfort. Sustained operation with high tire pressure accelerates localized wear on the central tread pattern, shortening tire lifespan and increasing maintenance costs for car owners. Vehicle vibration increases, indirectly affecting the service life of other components. It damages the tire cords, causing excessive tensile deformation that reduces tire elasticity, leading to increased load during vehicle operation. It also diminishes the tire's resistance to destructive forces, making it more susceptible to punctures from sharp objects like nails or glass during driving, potentially resulting in air leakage or even tire blowouts.