Maximum Loaded Trailer Weight; Tongue Load Or Fifth Wheel King Pin Weight - Mazda B4000 Owner's Manual

Maximum Loaded Trailer Weight – is the highest possible weight of a
fully loaded trailer the vehicle can tow. It assumes a vehicle with only
mandatory options, no cargo (internal or external), a tongue load of
10–15% (conventional trailer) or king pin weight of 15–25% (fifth wheel
trailer), and driver only (68 kg [150 lbs]). Consult your dealership (or
the RV and Trailer Towing Guide provided by your dealership) for
more detailed information.
Tongue Load or Fifth Wheel King Pin Weight – refers to the amount
of the weight that a trailer pushes down on a trailer hitch.
Examples: For a 2268 kg (5000 lbs.) conventional trailer, multiply 5000
by 0.10 and 0.15 to obtain a proper tongue load range of 227 to 340 kg
(500 to 750 lbs.). For an 5216 kg (11,500 lbs.) fifth wheel trailer,
multiply by 0.15 and 0.25 to obtain a proper king pin load range of 782
to 1304 kg (1,725 to 2,875 lbs.)
WARNING: Do not exceed the GVWR or the GAWR specified on
the certification label.
WARNING: Do not use replacement tires with lower load
carrying capacities than the originals because they may lower