The first thing to do in this situation is to determine whether or not the leaf springs under your vehicle are actually worn out. The tell-tale cues of an ailing pair of leaf springs should be easy to spot, as long as you know what to look for in the parked position of your vehicle. Simply put, if a truck slumps at the rear when the back is empty, the leaf springs will in all likelihood need an immediate replacement. After all, if the rear bumper almost sinks to the ground when the back is empty, how safe could it be to drive the vehicle with any load whatsoever?

On the other hand, an empty truck that sits horizontally when parked along a flat stretch of pavement is likely equipped with the solid pair of rear leaf springs. However, there might still be a problem with the leaf springs if that same vehicle slouches when then the track is loaded in back. In cases such as these, the leaf springs are usually in good condition, but lack the strength to support the full payload capacity of the given vehicle. As such, the leaf springs are likely in need of enhanced support, which can come in the form of an add a leaf lift kit.