The No. 1 consideration when spec’ing a truck is payload. The weight of the payload determines the engine displacement, transmission, size of tires, and frame type. You determine the payload by determining the fleet application.
Avoid the 'If-it-Fits-it-Ships' Trap
Overloading can have serious consequences for truck fleets ranging from accidents to increased maintenance costs to DOT citations. Make sure fleet trucks are properly spec’d and that drivers avoid “pack-ratting” tools and other supplies.