I have a 2001 Cherokee 4WD Sport. If I come to a stop quickly, I feel this nudge. It's almost like I've been tapped in the rear bumper (no jokes, please.) I feel the same nudge when I start suddenly. I feels like it's either in the center or towards the rear of the Jeep. Is this axle wrap. The Jeep is stone stock, except for some AT tires.