Central Tire Deflation/Inflation System

A tire deflation and inflation system for a vehicle, the system comprising:

• a unit bearing including a plurality of wheel flanges, the unit bearing configured to receive therein a portion of an axle of the vehicle;
• a hub mounted to the unit bearing;
• and
• a sealed air chamber defined by at least the unit bearing, the axle, and the hub, an inlet of the sealed air chamber is configured to be connected to an air pressure source, and an outlet of the sealed air chamber is configured to be connected to a tire of the vehicle;
• wherein upon activation of the air pressure source to generate positive air pressure, air from the air pressure source flows through the sealed air chamber and into the tire to inflate the tire;
• and
• wherein upon venting the system to atmosphere air is drawn out of the tire and through the sealed air chamber.