Cummins 6 Cylinder 6.7 L Diesel Engine, 2017 US EPA Label, Requires Diesel Exhaust Fluid, Automated Transmission, 10000 lb Front Axle, 17500 lb Rears, 25999 lb GVWR, 265/75R22.5 Front Tires, 245/70R19.5 Rear Tires, Air Ride Suspension, 272 in Wheelbase, Supreme 26 ft x 102 in Wide x 97 in High Body, Liftgate