What is the impact of high altitude on car tire pressure?

1 Answers
McAmy
07/30/25 10:14am
High altitude has little effect on car tire pressure. Tire pressure is mainly influenced by factors such as seasonality, driving conditions, and load capacity. Normal tire pressure reference standards: According to the international GBT2978-2008 standard, the standard tire pressure is approximately 2.4-2.5 bar for standard tires and 2.8-2.9 bar for reinforced tires. In winter, it is advisable to increase the tire pressure by about 0.2 bar based on the standard tire pressure, while in summer, the tire pressure should be set at the lower limit of the standard, generally about 0.1 bar lower than the standard, to prevent tire blowouts due to high temperatures. When the car is empty or half-loaded, adjust the tire pressure to the lower limit of the standard; when fully loaded, adjust it to the upper limit. On rough roads, it is appropriate to reduce the tire pressure by 0.1-0.2 bar from the standard; for long-distance high-speed driving, the tire pressure should not be too low and can be increased by about 0.2 bar from the lower limit of the standard. Daily tire pressure precautions: Cars are generally equipped with a tire pressure monitoring system that alerts the driver to tire leaks and abnormal tire pressure to ensure driving safety. Daily attention should be paid to the tire pressure monitoring light on the dashboard, as both excessively low and high tire pressure can affect driving performance and increase tire wear.
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