<p>Air pressure can be easily checked with the help of a calibrated accurate air pressure gauge. An air gauge is fairly cheap and a handy device that helps you easily check your car tyre pressure yourself.&nbsp;<br>To check the air pressure, take the cap off the valve and put the gauge on the valve. The gauge will show the pressure reading. If it doesn’t match the one mentioned on your placard or owner’s manual then you might have to add or remove air until it reaches the recommended number. Once that is done check the air pressure again with the gauge to make sure your tyres are inflated correctly. At the end do not forget to place the cap back to the valve stem. Check all your tyres including the spare if your car has one. In case the spare is a space saver type, follow the recommended pressure posted on its rim.</p>