Lexus RX 450h 2010 Owner's Manual page 282

Trailer tongue load
● A recommended tongue load varies in accordance with the types of
trailers or towing as described below.
● 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 9
to 11% of the gross trailer weight, not exceeding 350 lb. (158 kg).
(Tongue load / Gross trailer weight x 100 = 9 to 11%)
If the gross trailer weight is over 2000 lbs. (900 kg), it is necessary to
use a sway control device with sufficient capacity.
The gross trailer weight and tongue load can be measured with platform
scales found at highway weighing station, building supply company,
trucking company, junk yard, etc.
Hitch and tow hitch receiver
■ Hitch
Trailer hitch assemblies have different weight capacities established by
the hitch manufacturer. Even though the vehicle may be rated for tow-
ing a higher weight, the operator must never exceed the maximum
weight rating specified for the trailer hitch.
2-5. Driving information
Gross trailer weight
Tongue load
2
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