Toyota 4runner 2009 User Manual page 217

Trailer tongue load
l A recommended tongue load varies in accordance with the types
of trailers or towing as described below.
l In order to ensure the recommended values shown below, the
trailer must be loaded by referring to the following instructions.
The trailer cargo load should be distributed so that the tongue load
is 10% of the gross trailer weight, not exceeding the following.
(Tongue load /Gross trailer weight x 100 = 10%)
If the gross trailer weight is over 2000 lbs. (907 kg), it is necessary
to use a sway control device with sufficient capacity.
If the gross trailer weight is over 5000 lbs. (2268 kg), it is neces-
sary to use a weight distributing hitch with sufficient capacity.
If using a weight distributing hitch when towing, keep your vehicle
level with the ground.
The gross trailer weight and tongue load can be measured with plat-
form scales found at a highway weighing station, building supply
company, trucking company, junk yard, etc.
Hitch
Trailer hitch assemblies have different weight capacities established
by the hitch manufacturer. Even though the vehicle may be rated for
towing a higher weight, the operator must never exceed the maxi-
mum weight rating specified for the trailer hitch.
2-5. Driving information
Gross trailer weight
Tongue load
2
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