What is the normal range for tire pressure?
2 Answers
The normal range for tire pressure is between 2.3 and 2.5 bar, while reinforced tires require a pressure of 2.8 to 2.9 bar. The maximum tire pressure for any car should not exceed 3.5 bar. Tire pressure refers to the air pressure inside the tire, which is essentially the 'blood pressure' of the car. The level of tire pressure plays a crucial role in the performance and power of the vehicle. Air pressure is the lifeline of the tire; both too high and too low pressure can shorten the tire's lifespan. Low pressure increases the deformation of the tire body, leading to cracks on the tire side, and causes flexing movements, resulting in excessive heat generation, rubber aging, fatigue of the cord layers, and breakage of the cords. It also increases the tire's contact area with the ground, accelerating wear on the tire shoulders.
I've been driving since my teens and have developed the habit of checking tire pressure monthly. Normal tire pressure usually ranges between 30 to 35 PSI, depending on the vehicle's size and type. My old manual states that small cars typically require 32 PSI for front tires and 30 PSI for rear tires, while SUVs need slightly higher pressure. Overinflation makes tires stiff, leading to a bumpy ride and increased risk of blowouts; underinflation causes faster wear and risks sidewall deformation. I always measure when tires are cold, using a simple tire pressure gauge at gas stations where it's free. Seasonal changes are crucial—summer heat can increase pressure by a few PSI, while winter cold requires topping up. A 10-degree temperature difference changes pressure by about 1 PSI, so checking on cold winter mornings is best. Regular maintenance extends tire life and saves fuel. Five years of experience have taught me that safety comes first—never skip this essential check.
