3 Primary Considerations:
- Pulling power: The 1/2 tons with the bigger engine options can often report some pretty close towing numbers but this is rarely the limiting factor for 5th wheels.
- Payload: With 5th wheels, this is usually the killer for 1/2 ton and why people are suggesting a 350 Single Rear Wheel a cheap upgrade that will pay dividends. With a travel trailer, the hitch wieght is typically 7-10% of the trailer weight. With a 5th wheel it is typically 15-25% of the trailer weight.
- Brakes: In theory, the trailer brakes stop the trailer but when something goes wrong having big truck brakes that come with a 3/4 or 1 ton are a good thing.