What is the standard tire pressure value?
2 Answers
Different tires have different pressure values. Generally, the standard tire pressure for regular tires is between 2.4-2.5 bar, while reinforced tires have a pressure range of 2.8-2.9 bar. Additionally, due to seasonal factors, tire pressure can be increased by 0.2 bar in winter and decreased by 0.1 bar in summer. Tire pressure can be monitored via a tire pressure monitoring system (TPMS), which automatically and continuously checks the tire pressure while driving and alerts the driver in case of leaks or low pressure to ensure driving safety. If the tire pressure warning light illuminates (a yellow symbol featuring an irregular circle without a seal, with four small spikes at the bottom and an exclamation mark inside), it generally indicates one of the following three issues: 1. Abnormal tire pressure. The system typically alerts when the pressure is below 1.8 bar or above 3.0 bar. In this case, the tires should be inspected and the pressure adjusted accordingly. 2. The tire pressure monitoring system has not been reset. After inflating the tires, if the system is not reset promptly, it may still display the previous data, causing the warning light to stay on. Simply resetting the system will resolve this issue. 3. A damaged tire pressure sensor. The sensor, which monitors tire pressure, is installed inside the tire and connected to the inflation valve. If the sensor is damaged during driving (e.g., due to impact), the tire pressure warning light will activate. In such cases, the only solution is to replace the faulty sensor with a new one.
Many people ask me about tire pressure thinking one value fits all, but each vehicle is different. My advice is to check the label on the driver's door jamb—that's where the manufacturer's official standard is printed. For regular cars, it's usually between 2.2 to 2.5 bar, while SUVs may go slightly higher to around 2.8 bar. Tire pressure can rise by about 0.3 bar when driving on highways in summer, so measuring when the tires are cold in the morning gives the most accurate reading. I make it a habit to check monthly; tire shops offer free air refills, and buying a digital tire pressure gauge to keep in the car is affordable. Underinflated tires develop sawtooth wear on the sidewalls, wasting fuel and posing risks; overinflation makes the ride harsh and reduces grip. Remember, the MAX value on the tire sidewall is just the limit—always follow the door label for daily use.
