3. Next, we installed the Air Ride Technologies upper spring pads on the frame. To ensure perfect placement, Matt mocked up the intended ride height and then checked to be sure there was sufficient suspension travel in both the compression and rebound positions at this ride height. He also checked ground clearance, driveline angle, and wheel clearance. When he was satisfied that all was well, he then marked the mounting brackets at their design height for permanent mounting. It's important to remember that if the air spring is mounted forward of the axle centerline, the air spring's travel will be multiplied at the wheel.