What is a fifth wheel on a truck? And what does it mean to slide your tandems on a trailer?
Fifth wheel - the plate where the trailer pin connects to the tractorSliding tandems (axles) - permits adjustment of how much weight is being carried by the front (tractor) or rear (trailer) tires, and adjusts where the CG is for good towingSliding the trailer wheels back puts more weight on the tractor wheels, sliding them back puts more weight on the trailer wheelsYou need a balance, with about 10% more weight on the tractor than the trailerSometimes cargo gets loaded into the trailer that's not uniform or balanced well, and then the driver needs to adjustYou can slide the wheels on most all trailers, it's not as common on the tractors, but I've seen it on some of those super haul multi-axle rigs that move earth movers, large dozers, cranes, and the like.
