What is the normal pressure for car tires?
2 Answers
Car tires normally have a pressure between 2.2 and 2.5 bar. Tires are round, elastic rubber products mounted on various vehicles or machinery to roll on the ground. The functions of tires are: 1. To prevent severe vibrations and early damage to vehicle components, adapt to the high-speed performance of the vehicle, and reduce driving noise; 2. To support the full weight of the vehicle, bear the load of the car, and transmit forces and moments in other directions; 3. To transmit traction and braking torque, ensuring good adhesion between the wheels and the road surface, thereby improving the vehicle's power, braking, and passability.
I've been driving for over a decade, and there's a lot to know about tire pressure. For regular family sedans, the normal tire pressure is usually between 2.2 and 2.5 bar, depending on the car model and tire specifications. I remember one time when the pressure was pumped up to 2.6, and I could clearly feel the steering wheel becoming too light on the highway. Later, I learned that too high pressure affects grip. On the other hand, when the pressure drops to 2.0, the edges of the tires wear out much faster, and hitting a pothole can easily cause a bulge. It's recommended to check the pressure once a month when the tires are cold, meaning after the car has been parked for three hours. The manufacturer's standard values are usually posted on the door frame or fuel cap. Adjustments are also needed with the seasons—reduce it by 0.1-0.2 in summer due to thermal expansion, and add a bit in winter. Don’t forget the spare tire, which should usually be kept around 3.0 bar to ensure it doesn’t fail in an emergency.
