The Self Inflating Tire system is primarily designed to aid fuel economy and safety. As well as benefiting drivers through the elimination of unpopular pressure checks and inconvenient tire inflation, it helps to address the serious drawbacks of incorrect tire pressure. SIT is a tire feature that uses atmospheric air to inflate the tire automatically when a vehicle is in motion, compensating for natural loss of pressure, and ensuring maintenance-free, constant tire pressure over the lifetime of the tire.
SIT’s key design feature is its simplicity, making it the first tire inflation system to be mass-production feasible. The whole system consists of only two components – the tube chamber serving the function of a peristaltic pump for the tire, and a managing valve to control the inflation.