car tire pressure

‌The normal air pressure range of car tires is usually between 2.3-2.5 bar (corresponding to 240-250 kPa)‌, which is the standard tire pressure range for most cars. The specific value should be adjusted according to the vehicle model and manufacturer's recommendations, because factors such as vehicle weight and chassis height of different models will affect the required tire pressure. ‌

Recommended tire pressure values for different models

‌Small car‌: Normal tire pressure is 210-230 kPa, 220-240 kPa when the seats and trunk are fully loaded, and 220-230 kPa when the vehicle speed exceeds 140km/h.

‌Compact car‌: Normal tire pressure is 220-240 kPa, 230-250 kPa when the seats and trunk are fully loaded, and 230-250 kPa when the vehicle speed exceeds 140km/h.

‌Mid-sized car‌: Normal tire pressure is 230-250 kPa, 240-260 kPa when the seats and trunk are fully loaded, and 240-260 kPa when the vehicle speed exceeds 140km/h.

‌Medium and large vehicles‌: Normal tire pressure is 250-270 kPa, 270-290 kPa when the seats and trunk are fully loaded, and 270-290 kPa when the vehicle speed exceeds 140km/h.

‌Large vehicles‌: Normal tire pressure is 260-300 kPa, 280-310 kPa when the seats and trunk are fully loaded, and 280-310 kPa when the vehicle speed exceeds 140km/h.

The effect of tire pressure on car performance

Tire pressure that is too high or too low can have a negative impact on your car's driving performance. Too high tire pressure will cause the tire to become drum-shaped, reducing the tire's contact area and reducing adhesion; while too low tire pressure will increase the tire's rolling resistance coefficient, causing fatigue. Therefore, maintaining proper tire pressure is key to ensuring good performance of your car.

How to measure and adjust tire pressure

To ensure that the tire pressure is within the appropriate range, it is recommended to regularly measure the tire pressure using a tire pressure gauge. Most modern vehicles are equipped with a tire pressure monitoring function that can monitor tire pressure and tire temperature in real time and display tire information through the instrument cluster. If the original vehicle is not equipped with this feature, you can install a tire pressure monitor or check it regularly with a tire pressure gauge.