Tip wear on the reverse side of sprocket teeth actually happens while the machine is driving forward. Sprockets packed with mud force the bushing in the track chain to seat high on the tooth. Following bushings strike the back side of the teeth, rounding off the tops and reverse side of both the sprocket teeth and the bushings. Loosen track tension to reduce wear when mud starts packing in sprocket teeth. Relieved sprockets can allow mud to squeeze out of the sprocket roots.