All new tires! This beast of a truck has the fantastic CAT 3126 6 Cylinder 7.2 L Diesel 246 hp Engine, and Allison 6-Speed Automatic Transmission, runs and drives perfectly. It has 12000 lb Front Axle and 21000 lb Rear, 33000 lb GVWR, 11R22.5, Spring Suspension, 180 in Wheelbase. It also has a pintel hitch and gladhands which is uncommon on a vac truck so you can also use it to haul large heavy trailers. The excavator system is 800 gallon waste tank, the black boxes on the sides are hoppers for gravel or road base so you can refill holes without having to haul in material on another truck or trailer