Jonathan92028 wrote:
Hi,
everyone I’m new to this website and was hoping to get your advice.
I have a 25’ Class C four winds RV with a e450.
Because I do lots of boondocking and have issues finding water, I wanted to add a 48 gallon water tank to my roof. I realize there’s some negatives and I’m curious what you thought or have experienced. I do not tow anything, I do realize it will add an extra 400lbs to my RV and center of gravity will possibly be effected. I plan to spread the load over several roof supports . 
The tank is Clear plastic allows you to see the water level easily. Tank measures 64 1/2" L x 18" W x 12" deep.
Any feedback ? , has anyone tried this.
That's too much weight up there on the roof. Also, the sun will make and keep the water pretty warm.
The place to have fresh extra water capacity added is in tanks mounted down underneath the coach floor on each side between the longitudinal chassis frame members and the drive shaft.
I once read of a Class C owner who carried an extra 150 gallons of water this way. Of course with water stored this way ... during winter camping it could be exposed to freezing in extreme cold temperatures, and would need to be pumped up to where you needed it.
The above is really the right way to add fresh water capacity in large amounts. Of course, small plastic tanks can instead be tucked away and plumbed inside the coach so as to be in, or behind, or below, regular storage cabinets - as most motorhomes have some wasted space areas.
