Correct tire pressure is very important. If you don't check your air pressure, you could be driving on a low tire, which increases the odds of a blowout. Many accidents are caused by tire failure, and many tires that fail do so because of low air pressure. One fantastic new system available on most new cars is tire pressure monitoring, also known as TPMS. When you've installed a new tire, it is sometimes necessary to reset the system.
Drive the car at freeway speeds for 50 miles. Many vehicles can be reset just by driving the car. If this does not work, move on to the next steps.
Take out your TPMS scanner. Most of the scanners work in the same fashion. Become familiar with how your TPMS scanner works. Notice that the scanner has a menu button and a selector to select your model car. Select your car and follow the prompts on the screen to reset the TPMS units.
Reset the tires on the car one by one. This will require you to walk around the car to each tire and push the reset button.
