The pressure in the tire also increases while the car is moving at high speed and frequent maneuvers. In winter it is almost imperceptible. Cold air and low road surface temperatures prevent the tire from heating up. In the summer, the oncoming flow of warm air does not cool the tire well and its temperature begins to rise. Additional heating of the tire comes from the road surface heated by the sun's rays. All this can increase tire pressure by 0.2-0.3 bar.
Warning! Tire pressure is only measured when the tire temperature is equal to the ambient temperature.
To complete the work you will need:
- manometer;
- compressor or tire pump.
Execution sequence
1. We prepare the car for work (see "Preparing the car for maintenance and repair").
2. Pulling towards you, remove the decorative wheel cap.
3. Turn off the protective cap of the nipple.
4. Firmly press the leg of the pressure gauge to the end of the nipple and hold it in this position for 1-2 s, after which we disconnect the pressure gauge from the nipple.
5. We return the pressure gauge needle to zero and repeat the test.
6. If the tire pressure is below 1.9 bar (0.19 MPa), then we pump it up with a pump or compressor.
Comment. When pumping, control the pressure according to the pressure gauge of the pump or compressor.
Warning! When inflating, the pressure gauge shows the pressure not in the tire, but in the air supply hose. To determine the true pressure in the tire, it is necessary to interrupt the inflation process.
7. If the pressure in the wheel tire is higher than normal, then we bleed the air by sinking the nipple axis with a special spike on the pressure gauge body or with a screwdriver blade. We release air from the tire in small portions with an intermediate pressure check.
8. We screw a protective cap onto the nipple.
9. Similarly, we check the pressure in the remaining wheels of the car.