The weather suddenly turned cold, and the tire pressure of all four cars was insufficient. What should I do?

This is normal, just add some air. On snowy days, gas will contract due to thermal expansion and cold contraction, resulting in a drop in tire pressure. If the tire pressure is just right, then the cold will lead to insufficient tire pressure.

Tire pressure, strictly speaking, refers to the pressure of air inside the tire. The engine is the heart of the car in car maintenance, and the damage of the engine will lead to the exhaustion of the life of the car, so the tire pressure is the blood pressure of the car, and the level of tire pressure plays a vital role in the performance and power of the car.

Now, many tires are not inflated. For these tires, the tire pressure requirements are strict. Inflated tires are related to seasonal changes. Moreover, the tire pressure is closely related to the comfort and bearing capacity of the car, which will also affect the tire life.