Here is an old-school trick from our pal Mike that we noticed while everyone aired down. He keeps this custom balance hose in his ’75 CJ-5. It has two ends that clamp on to valve stems of two tires and equal length of hose connected to this central block. The block has a drain valve for letting air out and a valve stem so that Mike can use a low-pressure tire gauge to see what pressure the tires are at. This is a quick way to air down two tires at once. Also, if you have a slow leak in one tire or burp air out of a tire on a rock while on the trail, you can close the valve and use the hose to quickly borrow some air from the spare tire.