Trailer Towing; Common Towing Definitions - Jeep Grand Cherokee 2020 Owner's Manual

258 STARTING AND OPERATING

TRAILER TOWING

In this section you will find safety tips and
information on limits to the type of towing you
can reasonably do with your vehicle. Before
towing a trailer, carefully review this information
to tow your load as efficiently and safely as
possible.
To maintain the New Vehicle Limited Warranty
coverage, follow the requirements and
recommendations in this manual concerning
vehicles used for trailer towing.

Common Towing Definitions

The following trailer towing related definitions
will assist you in understanding the following
information:
Gross Vehicle Weight Rating (GVWR)
The Gross Vehicle Weight Rating (GVWR) is the
total allowable weight of your vehicle. This
includes driver, passengers, cargo and tongue
weight. The total load must be limited so that
you do not exceed the GVWR. Refer to "Vehicle
Loading/Vehicle Certification Label" in "Starting
And Operating" for further information.
Gross Trailer Weight (GTW)
The Gross Trailer Weight (GTW) is the weight of
the trailer plus the weight of all cargo,
consumables and equipment (permanent or
temporary) loaded in or on the trailer in its
"loaded and ready for operation" condition.
The recommended way to measure GTW is to
put your fully loaded trailer on a vehicle scale.
The entire weight of the trailer must be
supported by the scale.
WARNING!
If the gross trailer weight is 5,000 lbs
(2,267 kg) or more, it is recommended to use
a weight-distributing hitch to ensure stable
handling of your vehicle. If you use a standard
weight-carrying hitch, you could lose control
of your vehicle and cause a collision.
Gross Combination Weight Rating (GCWR)
The Gross Combination Weight Rating (GCWR)
is the total allowable weight of your vehicle and
trailer when weighed in combination.
Gross Axle Weight Rating (GAWR)
The Gross Axle Weight Rating (GAWR) is the
maximum capacity of the front and rear axles.
Distribute the load over the front and rear axles
evenly. Make sure that you do not exceed either
front or rear GAWR. Refer to "Vehicle
Loading/Vehicle Certification Label" in "Starting
And Operating" for further information.
WARNING!
It is important that you do not exceed the
maximum front or rear GAWR. A dangerous
driving condition can result if either rating is
exceeded. You could lose control of the
vehicle and have a collision.
Tongue Weight (TW)
The Tongue Weight (TW) is the downward force
exerted on the hitch ball by the trailer. You must
consider this as part of the load on your vehicle.
Trailer Frontal Area
The frontal area is the maximum height
multiplied by the maximum width of the front of
a trailer.