What is the normal range for new car tire pressure?
2 Answers
The standard tire pressure for a new car is between 2.3 and 2.5 bar. Tire pressure is not constant; it increases as the tire temperature rises during driving. In low-temperature conditions, tire pressure is lower, but it increases while driving. In summer, it is quite normal for tire pressure to approach or even exceed 3.0 bar. Due to higher temperatures in summer, the principle of thermal expansion applies, so the normal tire pressure should be lower. As the tire temperature rises during driving, the tire pressure will also increase, typically ranging between 2.3 and 2.5 bar. In winter, the tire pressure can be slightly higher, ranging between 2.6 and 2.8 bar. Conversely, because temperatures are lower in winter, the tire pressure should be adjusted 0.1 to 0.2 bar higher than the normal value. Hazards of low tire pressure: Increased fuel consumption: Low tire pressure increases the contact area between the tire and the ground, thereby increasing friction and driving resistance, leading to higher fuel consumption. Shortened tire lifespan: Similarly, the increased contact area with the ground accelerates tire wear, reducing the tire's service life. Higher risk of blowouts: Increased friction raises the tire temperature, making the tire softer and weaker. When the tire can no longer support the vehicle's load, especially at high speeds, blowouts are more likely to occur.
As an experienced driver with years of driving under my belt, I believe the normal range for new tire pressure is typically between 30 to 35 PSI, with the exact value depending on your vehicle model and tire type. If the tire pressure is too low, say below 28 PSI, it increases the risk of a blowout, especially during high-speed driving where braking distance becomes longer, and grip in rainy conditions also decreases. On the other hand, if the tire pressure is too high, exceeding 36 PSI, while it might save a bit of fuel, it leads to uneven tire wear and significantly reduces comfort, making the ride feel more bumpy. I recommend checking the tire pressure once a month with a simple tire pressure gauge, referring to the label on the door frame or the owner's manual for the manufacturer's recommended values. Before loading heavy items or embarking on a long trip, it's wise to adjust the tire pressure to the upper limit to ensure safety and stability. Remember, improper tire pressure is one of the common causes of driving accidents, so don't overlook this small detail.
