1. The vehicle should be parked on level ground and the tire pressure should be measured when the vehicle is cold; 2. First check whether the tire pressure gun reading is at "0" position, if not, please clear it; 3. First check the tire pressure valve cover and align the pressure measuring nozzle of the tire pressure gun with the valve on the tire to press in vertically.The pressing speed should be fast, so as not to cause air leakage in the tire; 4. While pressing the tire pressure forcefully, observe whether the pointer is stable, quickly remove it after the pointer is stable, and then take a reading (usually a stable tire pressure reading can be obtainedimmediately) 5. Check tire pressure at least once a month and you may measure it several times before you know how to measure tire pressure to make sure the reading is correct.