The 4 State Trucks Blog

The reality is, a truly comprehensive semi truck fifth wheel guide could fill volumes — novellas, even. However, this post encompasses a very broad, general overview of fifth wheels on semi trucks.  Key Takeaways The fifth wheel locks the trailer kingpin to the tractor while allowing movement during turns. Sliding fifth wheels adjust axle weight distribution, traction, handling, and tire wear. Clunking, excess movement, hard coupling, or a loose handle often indicate worn or misadju …