Is It Normal for Tire Pressure to Drop to 2.2 When It Gets Cold?
2 Answers
Winter car tire pressure of 2.2 is a normal phenomenon. Although it is slightly lower than the normal tire pressure, it is still safe to drive without needing to add air. Almost all manufacturers recommend tire pressure between 2.3-2.5bar. Here are the relevant details: Generally, the lower limit of the standard tire pressure for car tires is acceptable. For example, the lower limit for standard tires is 2.4bar. If the car is often parked outdoors, the tire pressure can usually be about 0.1bar lower than the standard to avoid tire blowouts due to high temperatures. According to the international GBT2978-2008 standard, the recommended tire pressures for different tires are as follows: standard tires at 2.4-2.5bar; reinforced tires at 2.8-2.9bar; the maximum pressure should not exceed 3.5bar. Tire pressure abnormalities: Generally, an alarm will trigger if the pressure is below 1.8bar or above 3.0bar. In such cases, tire inspection and pressure adjustment are necessary.
It's common for tire pressure to drop as the weather gets colder, because the cold air causes the gas inside the tires to contract. But based on my years of driving experience, a drop to 22 PSI is not good. The normal tire pressure range for most cars is around 30 to 35 PSI, but you should check the sticker on the door frame or the user manual for the exact specifications. 22 PSI is way too low—it might indicate a leak or underinflation. I recommend using a simple tire pressure gauge to check (the most accurate reading is taken when the car is cold in the morning). If there's a leak, you should get it fixed immediately. Otherwise, driving with low pressure can lead to unstable handling, poor cornering, higher fuel consumption, and in the worst case, a blowout. Last year, my tire pressure dropped to 24 PSI, and it turned out to be a small nail puncture. I spent 100 yuan to fix it, and everything was fine afterward. Don't delay—safety comes first. Regular checks can save you a lot of trouble.
