What is the tire pressure when driving on highways?
2 Answers
When driving on highways, the tire pressure should be between 2.3 and 2.5 bar. Tires are one of the key components of a vehicle, and their functions include: 1. Contacting the road surface and working with the vehicle's suspension to mitigate impacts during driving; 2. Ensuring good ride comfort and smooth driving; 3. Maintaining excellent adhesion between the wheels and the road surface; 4. Enhancing the vehicle's traction, braking, and off-road capability; 5. Supporting the weight of the vehicle. Tires are categorized by their usage into: 1. Passenger tires; 2. Summer tires; 3. Summer high-performance tires; 4. Winter tires; 5. Heavy-duty and light truck tires.
After driving for so many years, I've found that tire pressure is quite important when driving on the highway. The recommended pressure is usually marked on the door frame or in the user manual. For my car, it's around 32 to 35 PSI, depending on your vehicle model. Remember to check it when the tires are cold, meaning after the car has been parked for three hours, because tire pressure can increase by about 10% due to heat from friction during high-speed driving. If the pressure is too high initially, it can easily lead to a blowout. Last summer, when I went on a long trip with slightly low tire pressure, the tires wore out faster and fuel consumption increased. Since then, I've learned to regularly use a tire pressure gauge. Unstable pressure on the highway can make the car feel floaty or noisy. Safety first—I recommend checking it monthly and adjusting it when temperatures change. Add air when it's cold (as pressure drops) but don't overinflate in hot weather. Never judge by appearance alone—developing good habits can save lives and money!
