Is a tire pressure of 1.9 normal in winter? Do I need to add air?

[OAriel]

Winter tire pressure of 1.9 bar is too low. In winter, it is recommended to slightly increase the tire pressure by about 0.2 bar based on the standard tire pressure for your car. When the car is cold, a front tire pressure of 2.2-2.3 bar and a rear tire pressure of 2.4-2.5 bar are within the normal range. According to the international GBT2978-2008 standard, the recommended tire pressures for different types of tires are as follows: Standard tires: 2.4-2.5 bar; Reinforced tires: 2.8-2.9 bar; The maximum pressure should not exceed 3.5 bar. Normal winter tire pressure: In winter, adjust the tire pressure slightly higher by about 0.2 bar based on the standard tire pressure for your car. Normal summer tire pressure: Generally, the lower limit of the standard tire pressure is sufficient. For example, the lower limit for standard tires is 2.4 bar. If the car is often parked outdoors, the tire pressure can be about 0.1 bar lower than the standard to avoid tire blowouts due to high temperatures.