Moving fresh water tank to the rear

More than bad idea, it's a horribly bad idea. If you want to travel with water in the tanks, the weight on the end will reduce tongue weight, it will cause excessive trailer sway, it will void any warranty you may have on the camper, it will will require a lot of unnecessary work and refabrication, which will definitely void any warranty on the camper. Campers are simply NOT made to be customized. You'll have a nightmare running new water lines.

Fresh water tank is only 28 gallons (Click here for stats.) That's a small tank. Water weighs about 8 pounds a gallon, thats only about 224 pounds being distributed between the axles and the hitch. So at most, about half that will be on the hitch if the tank is full. 112 pounds on the hitch is not going to make THAT much difference, unless you are towing with a Volkswagon Bug.

Bad idea! Unless you never plan on towing it with any water in the tank. Reducing tongue weight and water sloshing around behind the axles will lead to sway.

If you're worried about that little extra tongue weight, me thinks you are looking at too much trailer or have too little of a tow vehicle. Having to modify a tt right off the lot just to make it work is not the way you want to start.

Terrible idea :S ... why in the world would you want to move the weight of water that should be in front of the axles to the rear, aft of the axles where it will only unload the trailer tongue? :h