What is the normal tire pressure range?
2 Answers
According to the requirements of the international GBT2978-2008 standard, the standard tire pressure is 2.4-2.5 bar. In winter, the tire pressure should be adjusted slightly higher by about 0.2 bar based on the standard tire pressure. In summer, the lower limit of the standard tire pressure is generally sufficient. If the car is often parked outdoors, the tire pressure can usually be about 0.1 bar lower than the standard to avoid tire blowouts due to high temperatures. The hazards of excessive tire pressure include: Reduced tire friction and adhesion, affecting braking performance; Causes steering wheel vibration and deviation, reducing driving comfort; Accelerates wear on the central tread pattern, shortening tire lifespan; Increases vehicle vibration, indirectly affecting the lifespan of other components; Causes excessive stretching deformation of tire cords, reducing tire elasticity and increasing the load on the car during driving; Decreases puncture resistance. When encountering sharp objects like nails or glass on the road, they can easily penetrate the tire, causing internal cracks and blowouts.
I've driven various cars for many years, and the normal tire pressure range is usually between 30 to 35 PSI. The exact value depends on your car model, typically found on a small sticker inside the driver's door frame, which states the recommended pressure. In summer, tire pressure can be slightly lower because hot air expands; in winter, it's better to keep it higher for better anti-skid performance. I make it a habit to check once a month using a simple tire pressure gauge when the car is cold. If the pressure is too low, tires wear out faster and consume more fuel—up to 10% more in fuel costs. If it's too high, braking distance increases and handling becomes unstable. Once, I neglected low tire pressure and almost lost control on the highway—since then, I've taken it very seriously. Regular checks not only ensure safety but also extend tire life by two to three years, saving a lot on replacement costs. Developing this small habit makes driving much more reassuring.
