Need Help!! Bounce issue with lifted truck.
Ok, heres my issue, i've got a 2011 f250 lariat with a skyjacker lift,spacer and rear block for total of 10" of lift. I'm running a 24" rockstar wheel with 40" superswamper m16. Wheels and tires seemed to balance out just fine on machine. Drives good a little stiff but good except at speeds between 50 and 55mph, and than the rear of truck gets a terrible bounce than goes away once above 55. Any ideas or suggestions?? Its getting worse and dont want to tear anything up.