from what everyone has told me and from what i have seen, when you have a shakle reversal, this ih what happens: when you come up to an obstacle and start to go over it. your tire will move up and back as the suspension compresses. when the tire moves back, it does not put as much pressure on that tire which means less traction. with shakles in the front, the tire moves up and forward, when it moves forward, it pushes the tire down harder and give better traction