What is the normal tire pressure for car tires?
2 Answers
Car tires have a normal tire pressure between 2.3 to 2.5 bar. Tire pressure refers to the air pressure inside the tire. The effects of low tire pressure are: 1. It increases the contact area between the tire and the ground, making the tire prone to overheating; 2. It causes the tire body to expand, leading to cracks on the inner and outer sides of the tire; 3. It accelerates rubber aging and increases tire wear. The effects of high tire pressure are: 1. High tire pressure increases friction between the tire and the ground, reducing tire grip; 2. It affects the car's braking performance and driving comfort; 3. It accelerates wear on the central tread of the tire, reducing its lifespan.
As a seasoned driver with over ten years of experience, I usually maintain my tire pressure between 2.3 and 2.5 bar. This range is suitable for most regular sedans, but it depends on the vehicle type—for example, SUVs may require 2.5 bar or higher. I check it once a month. In winter, I increase the pressure by 0.2 bar because cold temperatures can cause tire pressure to drop, while in summer, I slightly release some air to avoid overheating and blowouts. A tire pressure gauge costs just a few dozen yuan, making it easy to measure yourself. If the pressure is too low, the steering wheel feels heavy and fuel consumption increases, but if it's too high, the ride becomes uncomfortably bumpy, and the center of the tire wears out faster. Remember to measure when the tires are cold for the most accurate reading—checking right after a high-speed drive will give a falsely high value.
