What should be the normal tire pressure for a car?
2 Answers
The normal tire pressure for a car should be between 2.4 and 2.6 bar. The hazards of abnormal tire pressure include: 1. Reduced tire friction and adhesion, affecting braking performance; 2. Causing steering wheel vibration and deviation, reducing driving comfort; 3. Accelerating localized wear of the central tread pattern, shortening tire lifespan; 4. Increased body vibration, indirectly affecting the lifespan of other components; 5. Excessive stretching deformation of tire cords, reducing tire elasticity and increasing the load on the car during driving; 6. Increased friction coefficient with the road surface, leading to higher fuel consumption; 7. Increased movement of various parts of the tire, causing abnormal heat due to excessive rolling.
I'm a car enthusiast, and after years of driving, I've found that tire pressure is crucial for both safety and fuel efficiency. Generally, the recommended cold tire pressure for passenger cars is between 2.2 and 2.5 bar, which is approximately 32 to 36 PSI. Remember to always measure it when the tires are cold, such as in the morning before heading out. The exact recommended values can be found on the door jamb label or in the owner's manual, and they may vary for different car models. If the tire pressure is too low, the tires wear out faster, consume more fuel, and pose safety risks, especially during summer highway driving where blowouts are more likely. On the other hand, overinflated tires make the ride uncomfortably stiff, reduce comfort, and weaken traction. I make it a habit to check the tire pressure monthly—a digital pressure gauge is very handy for this. Also, don't forget to adjust for seasonal changes: add a bit more air in winter and reduce it slightly in summer to account for thermal expansion.
