What is the normal tire pressure for a car driving at high speed?

[StElliana]

When driving at high speed, the standard tire pressure for a car ranges from 2.3 bar to 2.5 bar, while the reinforced type has a tire pressure between 2.8 bar and 2.9 bar. The maximum tire pressure should not exceed 3.5 bar. Tire pressure is not constant; as the tire temperature rises during driving, the internal tire pressure increases. In low-temperature conditions, the tire pressure is lower, and it rises during driving. Tire pressure refers to the air pressure inside the tire. When the tire pressure is too high, the vehicle's rolling resistance is small, and fuel consumption is low, but in emergency situations, sudden braking may be ineffective or the braking distance may increase. When the tire pressure is too low, the vehicle's comfort is better, providing a quiet and smooth ride, but the rolling resistance is high, leading to increased fuel consumption, and the vehicle is prone to standing waves and sudden tire blowouts at high speeds.