What is the normal tire pressure for cars running on highways?

[StSabrina]

When driving on highways, the normal tire pressure for cars is 2.5 kilograms per cubic centimeter. Below is an introduction to tire pressure-related information: 1. Function of low-pressure tires: Low-pressure tires are mainly used for private cars. 2. Function of high-pressure tires: High-pressure tires are mainly used for large trucks or passenger vehicles. Below are the differences between high-pressure and low-pressure tires: 1. In terms of nature: Low-pressure tires are hollow pneumatic tires; due to the development of skeleton materials and tire design, the load capacity of high-pressure tires has gradually increased, and the pressure has correspondingly risen, yet the cushioning performance remains similar to that of low-pressure tires of the same specifications. 2. In terms of appearance: Low-pressure tires have good elasticity and a wide cross-section, with a large contact area with the road. 3. In terms of tire pressure: The inflation pressure of high-pressure tires is 0.5~0.7 MPa; the inflation pressure of low-pressure tires is 0.15~0.45 MPa.