height INFINITI JX 2013 Towing Guide
Page 13 of 25
 2013 Infiniti Towing Guide  
 12 
TRAILER TONGUE LOAD 
Trailer tongue load is the amount of 
weight pressing down on the tow 
vehicle hitch.  
 
To measure trailer tongue load, place 
the tongue of the trailer on a scale 
when the trailer is not attached to the 
vehicle. A separate vehicle jack — not 
the trailer jack — should be used, as 
the location of the trailer jack is rearward of the trailer tongue and will not give you an accurate 
measurement of the true tongue load. Make sure the vehicle jack is placed directly under the trailer 
tongue coupler, and the tongue is set at the height/level of the tow vehicle hitch.  
 
For proper handling, you must keep the trailer tongue load between 10-15% of the actual trailer 
weight, within the limits of the maximum trailer tongue load allowable. For example, to determine 
the proper trailer tongue load for a 1,500-lb. trailer, multiply the weight of 1,500 lbs. by 10% to arrive 
at a figure of 150 lbs.  
 
Some trailer types may require different trailer tongue loads for safe towing. Always follow the 
trailer manufacturer’s recommendations for proper trailer set-up and trailer tongue load. Keep the 
trailer tongue load within the maximum trailer tongue load allowable. Additionally, make sure the 
vehicle has the payload capacity available for the trailer tongue load.  
 
Refer to your vehicle owner’s manual to view the maximum trailer tongue load listed for your vehicle.  
NOTE – The vehicle weight ratings (GVWR, GAWR, GCWR, etc.) must not be exceeded, regardless of 
trailer or hitch type. 
 
HITCH & TRAILER HEIGHT 
It is important that your trailer floor and 
tongue ride as level as possible. This  
will help prevent over-angling, bottoming-out, 
and improper tongue load and load transfer. 
Therefore, the hitch or trailer tongue must be 
adjusted during the initial vehicle/trailer fit-
up to ensure a level ride. Ball mounts and 
weight distribution hitches are available in 
different configurations to adjust the tongue 
load and load transfer and hitch ball height. 
 
Trailer Tongue Load
Total Trailer Loadx   100  =  10-15%
Vehicle
Jack
Trailer Tongue Load
Total Trailer Load