What is the normal tire pressure for the front tires of a BMW 3 Series?

[Adrian]

The normal tire pressure for the front tires of a BMW 3 Series is 2.4-2.5 bar, but it can fluctuate depending on specific conditions. In summer or winter, due to the principle of thermal expansion and contraction, tire pressure increases in high temperatures and decreases in low temperatures. Therefore, summer tire pressure should be lower than winter tire pressure. Generally, it is recommended to set summer tire pressure at the lower limit of the standard range, while winter tire pressure should be adjusted slightly higher by about 0.2 bar based on the standard pressure. Hazards of overinflated tires: Reduced friction and adhesion of the tires, affecting braking performance; Causes steering wheel vibration and drifting, reducing driving comfort; Accelerates wear on the central tread pattern, shortening tire lifespan; Increases vehicle vibration, indirectly affecting the lifespan of other components; Overstretches the tire cords, reducing elasticity and increasing the load on the vehicle during driving; Decreases puncture resistance, making it easier for sharp objects like nails or glass to penetrate the tire, leading to internal cracks, blowouts, or even tire bursts. Hazards of underinflated tires: Increases friction with the road surface, leading to higher fuel consumption; Makes the steering wheel heavy and prone to drifting, compromising driving safety; Increases movement in various parts of the tire, causing abnormal heat due to excessive rolling; Weakens the function of cords and rubber, leading to delamination or cord breakage, and excessive friction with the rim, damaging the bead area and causing abnormal wear; Multiplies friction between the tire and the ground, sharply raising tire temperature, softening the tire, and drastically reducing its strength. High-speed driving may result in a blowout; Increases tire deformation, making the sidewalls prone to cracks and causing flexing movements that generate excessive heat, accelerating rubber aging, cord fatigue, and breakage, while also enlarging the tire's contact area and hastening shoulder wear.