Checking tire pressure (Opel Zafira A)

The air pressure in a car tire is not constant. When the ambient temperature rises, the pressure in the tire increases, and when it falls, it falls. With small fluctuations in the ambient temperature, the pressure in the tire changes insignificantly. The pressure in the tire also increases when the car is moving at high speed and making frequent maneuvers. In winter, this is almost unnoticeable. Cold air and low road surface temperatures do not allow the tire to heat up. In summer, the oncoming flow of warm air does not cool the tire well and its temperature begins to rise. Additional heating of the tire also occurs from the road surface heated by the sun's rays. All this can increase the pressure in the tire by 0.2-0.3 bar.

The tire pressure must be maintained in strict accordance with the requirements specified on the sticker on the back of the gas tank cap.

Warning! The tire pressure is measured only when its temperature is equal to the ambient air temperature.

To check the tire pressure, you need to unscrew the protective cap of the valve...



...press the pressure gauge foot firmly against the end of the nipple and hold it in this position for 1-2 seconds, then disconnect the pressure gauge from the nipple. Then return the pressure gauge arrow to zero and repeat the test.





If the tire pressure is below the required level, it must be brought up to the norm.

Note: When pumping, monitor the pressure using the pump or compressor pressure gauge.

Warning! When inflating, the pressure gauge does not show the pressure in the tire, but in the air supply hose. To determine the true pressure in the tire, you must interrupt the inflation process.

If the tire pressure is higher, it is necessary to release the air by pressing the valve shaft with a special pin on the pressure gauge body or with the blade of a narrow screwdriver.



If the wheel has to be pumped up more than once a week, then a flat tire, damaged disk or valve is very likely. To find out the cause and fix it, it is better to contact a tire shop.