2010 Lexus RX 450h User Guide 2 - Page 279

2-5. Driving information 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 9 to 11% of the gross trailer weight, not exceeding 350 lb. (158 kg). (Tongue load / Gross trailer weight x 100 = 9 to 11%) When driving 2 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 a highway weighing station, building supply company, trucking company, junk yard, etc. Gross trailer weight Tongue load Hitch and tow hitch receiver n 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 maximum weight rating specified for the trailer hitch. 281