This document describes an automatic tire inflation system. The system uses sensors to monitor tire pressure and a compressor to inflate tires when pressure drops below a set level. This helps maintain proper tire pressure and provides benefits like improved fuel efficiency, increased tire life, better vehicle handling and safety. It explains how a rotary joint allows compressed air to flow into spinning tires without getting tangled. When developed, the system is intended to automatically regulate tire pressure without need for manual checks, reducing human effort and improving vehicle performance.