FORD 2012 F-550 v.3 - Manual (Page 248)

Example only:
Cargo Weight – includes all weight added to the Base Curb Weight,
including cargo and optional equipment. When towing, trailer tongue load
or king pin weight is also part of cargo weight.
GAW (Gross Axle Weight) – is the total weight placed on each axle
(front and rear) – including vehicle curb weight and all payload.
Tires, Wheels and Loading
248
2012 F-250/350/450/550 (f23)
Owners Guide, 3rd Printing
USA (fus)