Pin Weight

There always seems to be a division of those using the manufacturer's hitch weight as a "dry weight". There is a single purpose for the manufacturer's hitch weight, vehicle certification. It's a pass/no pass figure and normally fits within a model for a fully loaded trailer. Here is a verbatim extract from the standard the vehicle manufacturer MUST pass to certify the trailer's weights.

"On RV trailers, the sum of the GAWRs of all axles on the vehicle plus the vehicle manufacturer's recommended tongue weight must not be less than the GVWR. If tongue weight is specified as a range, the minimum value must be used."