Is it normal for cold tire pressure to be 250 and rise to 280 when driving?
2 Answers
No, it is not normal. Generally, the tire pressure for family cars should be between 2.2 bar and 2.5 bar to be considered normal. Tire pressure is influenced by many objective factors, such as temperature and altitude. Precautions for car tire pressure: 1. Low tire pressure: If the tire pressure is too low, it will increase tire deformation, leading to cracks on the tire side. It will also increase the contact area between the tire and the ground, accelerating wear on the tire shoulders and increasing fuel consumption. 2. High tire pressure: If the tire pressure is too high, it will increase the load on the car while driving, making it more prone to blowouts. At the same time, tire noise will increase, and the ride will be bumpier on uneven roads, significantly reducing comfort.
As a seasoned driver with years of experience, I've seen tire pressure fluctuations many times. It's perfectly normal for cold tire pressure of 250kPa to rise to 280kPa when driving - the air expands as tires heat up, especially noticeable in summer or after highway driving. Typically, an increase of 30-50kPa is nothing to worry about, but if it exceeds this range, say reaching 300kPa, then it's worth concern. I make it a habit to measure cold tire pressure on cool mornings each month, maintaining it around the recommended value on the door placard (e.g., 230kPa). This ensures both safety and extends tire life. Overinflation wears the center tread too quickly, while underinflation wears the edges and increases fuel consumption. Remember to check regularly - don't wait until problems arise.
