Ranchers have to haul a variety of things, including cattle, cleared brush and hay. Trucks come with certain load capacities, which means that they can safely haul a certain weight without compromising the vehicle. However, few ranchers travel with a scale, and they're more likely to fill a truck bed or a towed trailer until it's full. That means many trucks must travel long distances with over-capacity loads behind them, which can tax the engine, transmission and suspension. A heavy load could also put cracks in the structural frame of a truck. Ranchers should be particularly mindful of heavy trailers attached to the back of their trucks; such movable loads present special challenges to the truck's steering and suspension.