Example: A truck has a GVWR of 9,600 pounds, and a curb weight
of 6,600 pounds. This leaves a 3,000-pound carrying capacity.
Trailers also display a rating label that lists the maximum carrying
capacity of the trailer, or Gross Trailer Weight Rating (GTWR). Do not
exceed your trailer’s GTWR at any time. Compare the total weight of the
boat, including the engine, fuel, water and all other items being carried
on the boat, to the GTWR.
Tongue Weight
The tongue weight is the percentage of the total weight of the loaded
trailer on its tongue, which is the V-shaped portion of the trailer that
extends from the trailer frame to the coupler. The ideal tongue weight
falls between five and ten percent of the GTWR.
Example: If the weight of the loaded trailer is 3,000 pounds, then the
weight on the tongue should be no less than 150 pounds and no more
than 300 pounds.
Excessive tongue weight causes the front end of the towing vehicle to
sway during driving. Alternatively, insufficient tongue weight causes the
trailer to sway or fishtail.
Trailer Hitch
Hitches are specified by five classes, labeled from Class I to Class V.
These classes relate to the hitch’s capacity in pounds.
Always use a hitch with the same class number as the trailer. Most boat
trailers connect to a hitch ball that is connected to the towing vehicle.
Note that the hitch coupler on your trailer must match the size of the
hitch ball on your towing vehicle. The correct ball size needed is usually
marked on the trailer coupler.