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Old 02-21-2012, 01:00 PM   #1
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Confirming my TV tow rating.

Hi All, I would like to make sure I am correct in my TV tow rating calculations. Any clarification or corrections would be appreciated.
TV= F150 supercab, 4.6, 3:73 axle. Per O&M this package has the specs listed below:
GCWR=12200
Max trailer weight= 6800
Hitch is listed as below:
V5, 5000 trailer weight & 500 tongue or weight distribution of 9900 trailer weight & 900 tongue weight.

My interpretation is I can tow 5000/500 without weight distribution system which I do often with my boat and 6800/680 with weight distribution systems. Of course brakes are need and should go without saying but understood. Also I understand any cargo must be reduced from the GCWR.

Does my interpretation seem correct?
Thanks,
Terry
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Old 02-21-2012, 06:08 PM   #2
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looks to me that you're right on the 5000/500 but doesn't it say 9900/900 with WDH? although that don't really seem possible if the GCWR is 12800, that would mean the truck, full of gas with you and family could only weigh 2900 lbs? not for a full sized, supercab half ton truck, LOL.

what is the HP on that 4.6 liter engine? just curious
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Old 02-21-2012, 06:26 PM   #3
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Quote:
Originally Posted by papachaz57 View Post
looks to me that you're right on the 5000/500 but doesn't it say 9900/900 with WDH? although that don't really seem possible if the GCWR is 12800, that would mean the truck, full of gas with you and family could only weigh 2900 lbs? not for a full sized, supercab half ton truck, LOL.

what is the HP on that 4.6 liter engine? just curious
The 9900/900 is for the hitch only (hitch name plate) and not from the truck manual which was listed as 6800 for my truck, motor and gear options. I can't recall the 4.6 HP right now but the first two numbers that come to mind are 240 or 270 and I don't think it is 270.
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Old 02-23-2012, 07:11 PM   #4
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ok gotcha. so if the gross combined is 12200, what does the truck weigh? load the truck with what you'd normally put in it, plus you and other passengers, fill it full of gas (after you take out the 2nd mortgage it will require to do that with) and find a scale to weigh it. subtract that from 12200, and that's how much you can pull. according to the hitch itself, you could go up to 9900, but of course we know that's not gonna be even close.

we have a feed store over in the next town that has a scale, i haven't weighed my rig yet, but i'm going to. i'm pretty sure that i've estimated all my gear pretty close, and i'm calculating that i'm about 1000# under my GCVWR, but i'll find out. i have the blade valve put back in my black water tank, and it's gonna sit the next few days full of water and ridex, then i'll dump it in the clean out plug and go weigh it one day next week
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Old 02-27-2012, 08:01 AM   #5
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Quote:
Originally Posted by TDroma View Post
Does my interpretation seem correct?
Not exactly.

12200 minus 6800 = 5400

So your max trailer weight with WD hitch is 6,800 only if your wet and loaded pickup weighs only 5400 pounds. But it weighs a lot more than that, so no, you cannot tow a trailer that weighs 6,800 without being overloaded.

All manufacturer's tow ratings are overstated that way. To determine your real-world tow rating, load the truck with you and Sweetheart and the munchkins and Fido and Kitty and the cooler full of cool and the floor jack and your toolbox full of tools that you might need on the road. Go to a truckstop that has a CAT scale and fill up with gas. Then weigh the wet and loaded pickup.

Subtract the wet and loaded weight of the pickup from 12,200 and that is your real-world tow rating. But that might be high too. The tow rating assumes that GCWR is your limiter, and ignores GVWR. But you should never exceed either GCWR or GVWR, and on many tow vehicles GVWR is the limiter. So subtract the weight of the wet and loaded truck from the GVWR of the truck, and the answer is the max hitch weight you can have without being overloaded. Divide that max hitch weight by 12 percent, and the answer is the max weight of any tag trailer you can probably tow without being overloaded over the GVWR of the tow vehicle. Divide that max hitch weight by 18 percent and that will give you the max weight of any fifth wheel or gooseneck trailer you can probably tow without being overloaded over the GVWR of the tow vehicle.

With those calculations, your actual tow rating will the the lowest trailer weight you calculated, based on either GCWR or GVWR, which ever results in the lowest trailer weight.

Example: Your wet and loaded pickup weighs 6,200 pounds and has a GVWR of 7,000 pounds. So if GCWR is your limiter, then 6,000 pounds is the max trailer weight you can tow without busting the GCWR of the TV. 800 pounds hitch weight means you could tow up to 6,667 pounds of trailer weight without busting the GVWR of the TV. Since 6,000 is less than 6,667, then 6,000 is the max trailer weight you can tow without being overloaded.
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