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AntonB's avatar
AntonB
Explorer
Feb 24, 2014

Towing a my new travel trailer my .02

<---------Disclaimer--------> THIS INFORMATION IS IN NO WAY TO BE USED AS A GUIDE TO SIZING UP YOUR TRAVEL TRAILER TO A TOW VEHICLE. THIS IS FOR INFORMATIONAL PURPOSES ONLY AND IN NO WAY CAN BE CONSIDERED AN EXPERT OPINION. TOWING REQUIRES SKILL AND EXPERIENCE. IF YOU ARE UNEASY TRUST YOUR GUT AND DON'T DO IT!!!! OR SIMPLY DO YOUR OWN RESEARCH. <-----------Disclaimer.

Here are my numbers for later discussion

2008 Ford Expedition Eddie Bauer EL 4X4 with Heavy Duty Tow Package
34 gallon fuel capacity
3:73 rear end
Unladen weight 6262 lbs.
Gross Vehicle Weight Rating 7900 lbs. (Maximum load capacity)
Leaving a cargo capacity of 1638 lbs. (This is the weight allowed for all passengers, fluids, fuel and cargo combined to reach my 7900 lb limit of truck.
8750 lb max tow capacity
Gross Combined Weight Rating (Loaded truck and loaded trailer) is 15000 lb.

Weight distribution hitch (To be determined)

Tekonsha P3 Brake controller

2005 Jayco Jayflight 29FBS
Unladen Vehicle Weight is 7030 lb listed on kitchen cabinet door
Next numbers are DIRECTLY FROM JAYCO representative by VIN number
Shipped weight (Including beds, sofa, microwave, etc) is 6150 lb
The 880 lb difference is for hitch weight combined to give the 7030 UVW

Other considerations

Fuel weighs approximately 6.1 lbs per gallon
Water (H2O) weighs approximately 8 lbs per gallon
Liquid Propane (LP) weighs approximately 4.23 lbs per gallon
Combined family weight is 430 lbs total (Not individually LOL)

Here is the math....

Truck + Fuel + Family
6262 207 430 = approximately 6899 lb

Trailer + Cargo + Water (3 gallons) + LP (X2)
7030 800 24 40 = approximately 7894 lb

So I figure my Gross Combined Weight is 6899 + 7894 = 14793 lbs. My GCWR is 15000 lb

Although I am at the brink of capacity I am not over. Now if I missed anything please point it out. I know that there are some 2500ers around that say a 1/2 ton is not enough truck. Here is what Ford says " A 2500 vehicle that has the same power train as a 1/2 ton CAN TOW MORE the only difference is a stiffer suspension that accounts for more tongue weight, therefore you can carry a heavier trailer. For instance a tractor trailer is designed to tow big weight. Suspension and gearing allow this to take place. As they reach an incline they are working their motors to pull up an incline. So common thought would be a tractor trailer is "Not Enough Truck" to pull their load because they struggle on hills then right? Nope they are within their design limits to do this and account for it during travel. Us 1/2 ton folks should not be intimidated if the numbers work.

38 Replies

  • First, 800 lbs of cargo is very conservative. Folks that "travel light" will add 1000 lbs of cargo, families add around 1500 lbs, with the average being 1200 lbs. 3 gallons of water is unlikely to be useful...that's not enough for the pump to pick up from the bottom of the tank.

    Also 400 lbs in the truck for the family? You don't say how many in the family, that seems very light.

    Lastly 10% tongue weight is the bare minimum...watch out for sway and handling issues with that setup.

    Good job with the numbers but it sounds like you worked backwards to back into how much cargo you could carry. You get partial credit for showing your work but ultimately the answer is wrong. Ultimately, a trip to the scales after you load up will tell the story.
  • nomad297 wrote:
    Are you trying to rationalize something here?

    Once your trailer is loaded, you will probably be over your vehicle GVWR and your max hitch weight.

    Bruce


    I don't think I will be. The max hitch weight allowed by my Expy EL is 10% of the max trailer being towed 8750 lb. Hence in my calculations a loaded trailer at 7894 lb would have a hitch weight of 789 lb right? The rating for the Expy EL is 875 lb which is 10% of the maximum tow capacity utilizing a weight distribution hitch. so I am under by 86 lb. GVWR as I was explained in the maximum that the Expy's suspension can handle on it's own frame 1638 lb max, thus the GCWR is the Expedition loaded and the trailer loaded, 15000 lb max. I should come in at 14793 lb, 207 lb under the max loaded with family, fuel, water, propane and supplies. Am I right?
  • You had better scale everything.
    Since you are real close to the numbers, you should know that you are off on a few of your numbers. Gas= 6.25/gal, water= 8.3/gal., you also have a few quarts of oil, some hydraulic and gear oils, and antifreeze. Also, are you carrying the propane in a plastic bag, nope, better add the cylinder weight. Have a battery? They're 65 lbs. When figuring hitch weight, you need to add into the subtraction from payload, the weight of the WDH, usually around 100lbs.

    I would guess that even if you load nearly nothing in the trailer, your hitch weight is over 1000 lbs. and, by your own numbers, you are over the payload rating of the vehicle.

    Something else that usually doesn't get mentioned is not "Can I can I make this work?" but "Should I make this work?". Towing right at the ragged edge of weights (or over) is stressful, both for the vehicle and for the driver. In some cases, it can also be a safety issue
  • All sounds pretty maxed (I to have a 1/2 ton SUV). I think you will be over your trucks GVWR with actual tounge weight and any cargo in your truck. Maybe over on your receiver too. Rear axel?

    It's your stuff so ultimatly your decision.
  • You came up with :

    Here is the math....

    Truck + Fuel + Family
    6262 207 430 = approximately 6899 lb

    Trailer + Cargo + Water (3 gallons) + LP (X2)
    7030 800 24 40 = approximately 7894 lb

    So I figure my Gross Combined Weight is 6899 + 7894 = 14793 lbs. My GCWR is 15000 lb

    -------------------------------------------------------------------------

    What you are missing:

    A weight distribution hitch will add approximately 100 lbs to the vehicle. Your 6899 will be closer to 7000.

    Average tongue weight is 12 to 15 percent of loaded trailer weight. Twelve percent of 7894 (your loaded trailer weight) is 947 lbs. Add this to your 7000 lbs loaded vehicle, and you are over the 7900 lb GVWR.

    You will have some sidewall flexing in your passenger rated tires and your soft suspension will help to bring on a bit of sway.

    After a good sway control, first piece of equipment, you will need to buy, is a scale to weigh everything and everybody, before it / they get loaded up. Good excuse to not bring mother in law.

    Windy days will not be a pleasant towing experience. If you arrive at your destination, you (and possibly your passengers) will have white knuckles, leg cramps, and back / neck aches. The aching will subside in 24 - 36 hours. If this is a weekend trip, you'll be feeling good, just in time for the drive home. Happy camping !!!

    PS

    If you have cruise control, forget about using it. It won't stay engaged, with all the shifting and your transmission will get very hot.
  • A 2500 vehicle that has the same power train as a 1/4 ton CAN TOW MORE the only difference is a stiffer suspension that accounts for more tongue weight


    There are far more difference than stiffer springs on the 3/4 ton pickups over the half ton (where did 1/4 come from?). Furthermore, there are more difference between the half and 3/4 ton Suburbans than suspension. There has never been a 3/4 ton Expedition. Maybe you are thinking about the Excursion? I have no idea or how it relates.

    I bet you are over your Expy's 900 pound receiver, rear axle rating, GVWR/payload. People towing lighter TTs are having difficulty staying under all their ratings. How much weight does the tire and loading sticker say you can have for occupants and cargo?



    Why estimate now? $14 at a CAT scale will tell you exactly where you stand with respect to all your TV ratings.

    How does it tow?
  • Are you trying to rationalize something here?

    Once your trailer is loaded, you will probably be over your vehicle GVWR and your max hitch weight.

    Bruce