It is important to reduce tire pressure on unpaved roads and trails, even on well-maintained gravel roads, where you aren’t approaching highway speeds. It is safer and more comfortable over bumps. A pressure of 22 psi is conservative and improves the ride noticeably.
We choose to go with the Staun deflators for airing down. They have a good reputation, work in the dark, and air down four tires simultaneously. We are using 18 psi, for now, so the six to thirty psi deflators cover our range.
The VIAIR air compressors are in our price range, and they have a good reputation. So we choose the portable 400P model, which clamps to the battery posts and should be used with the engine running.
It draws 30 amps at 13.8 volts, so it delivers around 400 watts. We will replace the alligator clamps with Anderson Powerpole connectors after we wire the front and rear outlets.
In the Dark
We also added a backlit digital air pressure gauge to our kit for times we air up in the dark. It also has an LED at the tip to help you locate the stem.