Often it is the large luxury cars that are equipped with air suspension, even then as an accessory. You also often see that after-market air suspension is installed. In this technique use is made of air bellows to absorb the shocks. The advantage of these air springs is that the filling of bellows can be determined via a compressor and an air reservoir. For example, you can choose the ride height of the vehicle or the vehicle can adjust its ride height during heavy loads to maintain the optimum height.