OK, I think this is either a typo or an inaccurate conversion. It appears the OP may have gotten the 482 gal number from this link:
Full Specs for 2014 Forest River Solera 24R RVs | RVUSA.com
Here's a 2014 brochure. There's no 482, gallons or otherwise, quoted anywhere.
However, it does say that outside storage is 75 cu ft.
If you do the math, 75 cu ft = 561.039 gallons, which isn't too
far from 482 in the first link. So maybe it was an inaccurate conversion, but why anyone would list outside storage in gallons is beyond me.
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