Machine description: Air Ride Suspension, Lift 1st- 4th- Axles, Pintle Hitch, Dumps to Both Sides, 36 in Side Walls, Steel Body, Electric Roll Tarp, Aluminum Wheels, 385/65R22.5 Tires, 99150 lb GVWR, 46 ft Lead Body, 3 ft... more info about the 2015 Smithco SX4-49-36.