What is the normal air pressure for a truck?
2 Answers
Under normal circumstances, the air pressure gauge on a truck should read between 6-8 Bar. Here are specific considerations for adjusting truck tire pressure: 1. Special conditions: In deserts or muddy terrain, it's necessary to significantly reduce tire pressure, as this increases the tire's contact area with the ground, lowers pressure, and reduces the chance of getting stuck. 2. Frequent highway driving: To prevent the formation of standing waves in the tires, you can appropriately increase the tire pressure. 3. Winter and summer: Tire pressure can be slightly higher in winter and slightly lower in summer to prevent tire blowouts due to high temperatures. 4. Front tire pressure lower: Tire pressure is related to load. Due to different weight distributions of the vehicle body, the recommended tire pressure values for front tires, rear tires, half-load, and full-load will vary. Additionally, the front tires generally can have slightly lower pressure than the rear tires.
I've been driving trucks for almost twenty years, and the first thing I do every day is check the dashboard. The air pressure gauge usually works best between 8 to 10 kilograms, and it shouldn't drop below 7 kilograms. I remember once on a long trip, the needle got stuck at 6.5 kilograms, and when I hit the brakes, they felt noticeably weak. Later, I found out the dryer cartridge was clogged—I was so frustrated that I replaced the entire air system overnight. Regular maintenance is crucial, especially the drain valve at the bottom of the air reservoir; after the rainy season, a lot of water tends to accumulate. If the air pressure fluctuates abnormally, it's likely due to aging pipe joints leaking air—you need to stop and check immediately, because brake failure is no joke. Before driving mountain roads at night, I always test the brake pressure stability by pumping the brakes a few extra times.
