I have a 58 Apache with multi-leafs and shocks mounted to the inside of the frame. Hoosier Pro Streets barely fit in the back (and look great). My problem is the truck will roll violently in the back during acceleration if the suspension is upset by bumps or directional changes. Nothing underneath is new but all appears in good working order. Acceleration off the line produces a wheel hop that is sure to rip the rear axle out. From 60 to 65 mph a vibration in the chassis is excessive and I believe it is the rear tires. There is at least 4 Ounces of weight on the outside of the rear wheels only. My experience has shown this does not produce good dynamic balance. How do I prevent the body roll and what is the best way to balance a 29 x 18.5 tire?