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Old 06-12-2015, 11:29 PM   #1
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Join Date: Jun 2015
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Tongue Weight - Why so hard?...or isn't it?

Full disclosure: I don't own a TT, but this forum came up a lot in my google searches and I thought it would be a good place to ask a question.

I simply want to get the tongue weight of my boat/trailer at the coupler (downward force on the ball) and the weight of the boat/trailer itself. There is no weight distribution system.

Can't I just go to a CAT scale with the trailer axles and jack wheel location postioned on the scale and the tow vehicle not on the scale. Then take 2 weights:

Weight 1: Trailer connected to tow vehicle with wheel jack not used.
Weight 2: Nothing is moved but the trailer tongue/coupler is quickly lifted off the ball using the wheel jack which is also on the scale with the boat/trailer

Boat/trailer = Weight 2
Tongue weight = Weight 2 - Weight 1

Is it more complicated than this? All the posts I have read talk about multiple trips on the scale, etc, etc, making it seem quite complicated.

Either my math is wrong, I don't understand CAT scales, it is simpler because I don't have a weight distribution system, some other reason,.... or it is that simple?

Couldn't one also just do the same thing as above and only put the tow vehicle axles on the scale and then weight with and without the trailer attached. Should be the same thing.?

Going to the scales tomorrow would really appreciate any advice here from the experts.

(tow vehicle = SUV, Expect boat and trailer to be approximately 5000 lbs)

Many thanks,

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Old 06-13-2015, 01:10 PM   #2
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Join Date: Jun 2015
Posts: 2
Just went to the scales. It is that simple.

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Old 06-14-2015, 05:12 PM   #3
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Location: Virginia Blue Ridge Foothills
Posts: 9,272
Glad you figured it out.

Another method so as not to tie up the scales for any length of time, is go across 1 time with each axle (or pair of trailer axles) on a section, drop the trailer in the lot, and run just the truck across the scales....again with each axle on a section. The difference in the truck weights is your hitch weight. You can also see how much the trailer unloads the front axle of the truck.

Because the jack wheel is set back a bit from the coupler, it might not give you an exact hitch weight, but should be good enough for "government work".

Chap , DW Joy, and Fur Baby Sango
2006 Ford F150 Super Cab 4x4
2008 Surveyor 263
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