Staun Tire Deflators thread onto your tires' valves stems and deflate all of your tires to your desired, preset pressure. The preset pressure is easily adjustable from 6 to 30 psi and the setting can be changed an infinite number of times. The Staun Tire Deflators are constructed of solid brass for both corrosion resistance and resilience.
That though is for most folks. Given your demonstrated mechanical apptitude in other areas, you might want to take them to the tire shop for installation.
