What is the normal tire pressure value?
2 Answers
Tire pressure should normally be between 2.3 and 2.5 bar. Tire pressure refers to the air pressure inside the tire, and its level plays a crucial role in the performance and power of the vehicle. The effects of overinflation are: 1. Increased friction between the tire and the ground, reducing tire adhesion; 2. Impaired braking effectiveness and driving comfort, accelerating wear on the central tread and shortening tire lifespan; 3. Increased body vibration, accelerated tire aging, reduced wear resistance, and higher risk of blowouts. The effects of underinflation are: 1. Increased contact area between the tire and the ground, making the steering wheel heavier and affecting driving; 2. Tires are prone to overheating, increasing the risk of blowouts; 3. Expansion of the tire body, making it more likely for cracks to appear on the inner and outer sides of the tire; 4. Accelerated rubber aging and faster tire wear.
I've been driving for decades, and when it comes to the normal tire pressure values, I feel the most reliable approach is to regularly check with a tire pressure gauge. Generally, passenger car tire pressure is around 30 to 35 PSI, but it really depends on the vehicle's usage scenario. I remember when I first started driving, too low tire pressure would cause excessive tire wear and increased fuel consumption, while too high pressure made the ride bumpy and uncomfortable, not to mention affecting braking performance. Now I've developed a habit of checking every two weeks, especially during seasonal transitions when temperature fluctuations cause noticeable pressure changes – summer pressures tend to be slightly higher than winter. Different tire types also have variations, with SUVs typically requiring slightly higher pressure than sedans. Maintaining proper tire pressure extends tire life and makes driving much smoother and safer. Before long trips, I'm particularly careful – never rely on visual inspection alone, safety always comes first.
