 The best thing about electronically controlled air suspension? It's flexibility. Depending on your trailer, you have a few different suspension options. So let's look at the three most common ones. What are they and what do they do? First of all, let's talk about your lifting axles. Whether your lifting axles actually lift off the ground depends on whether you have lifting bellows installed. Those lifting bellows spare your tyres when you're driving empty. If you don't have those bellows, you won't see your lifting axles come off the ground. But don't worry, your air suspension is still working its magic in regulating the pressure in your suspension bellows. Your lifting axles have a few automatic functions. One is traction help, which releases the pressure in the first axle suspension bellows and shifts the weight towards the kingpin load point. This helps your truck gain traction on uneven or muddy terrain. Activating this function is easy. Push your brakes three times in 10 seconds while standing still. The second function is opti-turn, which automatically releases the pressure on the last axle and shifts the trailer's turning point towards the front. This makes it a lot easier to take turns. Both functions are fully automatic and carefully designed to increase the comfort, safety and efficiency of your trailer. And of course there's a lot more suspension options that we didn't discuss here. Curious? Discover them at www.stass.be