What is the optimal tire pressure for sedans on highways?
2 Answers
Generally, in summer, the front tires should be at 2.3 kg, and the rear tires at 2.5 kg; in winter, the front tires should be at 2.5 kg, and the rear tires at 2.7 kg. The specific pressure depends on the vehicle model. Below is some information about sedan tire pressure: 1. Tire pressure: "Tire pressure" refers to the air pressure inside the tire. Both overinflation and underinflation can affect the tire's lifespan. Underinflation increases tire deformation, leading to cracks on the sidewalls, enlarges the contact area with the ground, accelerates shoulder wear, and increases fuel consumption. 2. Precautions: Maintaining proper tire inflation provides the best combination of handling, tread life, and driving comfort. It is recommended to check tire pressure regularly, including the spare tire. Even well-maintained tires can lose 10-20 kPa per month, so regular checks are essential.
As a driving instructor, I always remind my students to check tire pressure before driving on the highway. For sedans at high speeds, the tire pressure should generally be about 0.2 bar higher than the manufacturer's recommended value. In summer, it's advisable to maintain a cold tire pressure of 2.3 bar. Pay special attention to the standard values on the sticker on the door frame; when fully loaded, the rear tires should be increased by 0.3 bar. Excessive tire pressure reduces tire grip, while too low pressure causes headaches, wastes fuel, and may lead to blowouts. Before long trips, it's most accurate to measure with a mechanical gauge, as the electronic ones at gas stations are often inaccurate.
