[h=2]Scenario: Only know the hitch maximum tongue weight rating[/h] If you only know the hitch rating as specified by the manufacturer, enter it in the
Tow vehicle maximum tongue weight rating box.
Example, using the 2005 Chevrolet Colorado, crew cab, 2WD, Vortec 2800 I-4 engine:
- Tow vehicle maximum tongue weight rating: 500 lbs
- Calculated Maximum Trailer Weight: 3,333 lbs
If the maximum tongue weight used in this calculation is from the hitch manufacturer, this result
may be highly inaccurate because the hitch rating may have no relevance whatsoever to the truck ratings. On the other hand, if the maximum tongue weight is from the truck manufacturer for this specific vehicle, then the calculation would be more accurate. In either case, using this number alone is insufficient because of the following:
- Calculation assumes that tongue weight is 15% of the total trailer weight. Variation in tongue weight percentage will make this assumption invalid.
- Using only the maximum tongue weight ignores other manufacturer specified weight constraints such as GVWR, GCWR, maximum loaded trailer weight (or GTW) and RGAWR. For better accuracy, enter as many of these values as possible.
The above calculation has put us well over the
1,700/2,900 lbs (manual/auto transmission) specified as the maximum trailer weight by Chevrolet.
These scenarios illustrate that relying on too little information may cause you to
exceed manufacturer ratings. On the other hand, providing the calculator with all relevant weight numbers will produce
accurate results.