Originally Posted by lbrjet
The dealer installs the battery. The factory adds in propane weight to the UVW even though the tanks are empty. The question is whether either of these is included in the published tongue weight.
2010 F250 5.4L 3.73
2011 Flagstaff 831FKBSS
Equal-i-zer 4pt 12K
The regulations for RV trailer manufacturers to follow to establish a hitch/pin weight is not in print where I can find it. All Iíve ever been able to find is it must be established. Manufacturers are not consistent with the figures. Probably because the center of gravity for each trailer design is different.
The regulations describe a single purpose for the manufacturerís hitch/pin weight. During the certification process it is added to the trailerís total GAWR, the sum must equal or be grater than the trailerís GVWR.
Once the trailer is sold the new owner becomes totally responsible for all subsequent hitch/pin weights. In other words, when you loaded it you figure it out.
End note: Most trailer batteries for travel trailers will not weigh enough for the dealer to change the cargo label unless they also add other options that would increase the added weight to the point where it becomes reportable. See FMVSS 571.110.