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Old 07-13-2018, 06:27 PM   #1
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Determining Payload...help needed


Upgrading tow vehicle and camper soon. Doing lots of reading and research to make sure I get the right TV. Fifth wheel wanted is Eagle 321rsts; stated hitch weight 2045 lbs; stated gvwr 12700 lbs. Truck choice is Ford F250 or F350; SRW CC SB 4X4 Diesel. Would like the truck to fit in my garage. Test drove an F250 with that basic set-up and it fit. Concerned about payload capacity of F250. Looking for input from those who are in the know on determining actual “towing math” so I dont exceed the truck’s ratings.

Payload weight = people (450) + cargo (250) + hitch weight (250) + pin weight (2045) .... = 2995 lbs total paylod capacity needed (what about fuel?)

I have been looking at trucks on the dealer lots to look at the payload capacity stickers on the door frame compared to the window sticker to try to find a truck that is close to what I would like to order. Im having trouble finding a SB truck on the lot with the fifth wheel factory puck package. That is why I am looking at ordering.

Any thoughts, input, or help is appreciated...
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Old 07-13-2018, 07:25 PM   #2
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I'll start.

An f250 and an f350 are priced nearly the same, but the 350 has a heftier suspension and so a higher payload. My 350 has a payload of 4177 and that's common. So if you want to haul a 5th wheel you may as well look for 350's.

You won't find short beds with the 5th wheel set-up because short beds require a sliding hitch. Long beds are a natural for 5th wheel trailers.

Now I know none of this from experience mind you, only from this and other forums and from my friend who has had more trailers than I've had wives. I just traded my short bed on an long bed f350 in anticipation of moving from our travel trailer to a 5th wheel. I went with a gas engine because I'm not a diesel person, and I'll be looking in the Eagle HT range. If you want to comfortably tow a big 5th wheel you may want to look into the f350 diesel. An f250's payload will be compromised by the weight of the engine.

Others who are more knowledgeable will chime in, but I'm just sharing my limited knowledge to get the ball rolling.
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Old 07-13-2018, 07:32 PM   #3
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The door frame stick will have the combined maximum weight of the vehicle which includes the vehicle, all cargo and passengers. Deduct the curb weight from the maximum weight and that will be your maximum payload. The window stick may include the weight of options that were added that are not already included in the curb weight.

By the way, the curb weight should include all fluids (coolant, oil, full fuel, etc.).
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Old 07-14-2018, 08:43 AM   #4
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After you are loaded to travel the pin will have more weight. I would anticipate 2500#.
Our 5th weighs 12700# loaded and has 3000# on the pin, we pull with a 350.
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Old 07-16-2018, 07:03 AM   #5
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Quote:
Originally Posted by Fyrehuntr View Post

Upgrading tow vehicle and camper soon. Doing lots of reading and research to make sure I get the right TV. Fifth wheel wanted is Eagle 321rsts; stated hitch weight 2045 lbs; stated gvwr 12700 lbs. Truck choice is Ford F250 or F350; SRW CC SB 4X4 Diesel. Would like the truck to fit in my garage. Test drove an F250 with that basic set-up and it fit. Concerned about payload capacity of F250. Looking for input from those who are in the know on determining actual “towing math” so I dont exceed the truck’s ratings.

Payload weight = people (450) + cargo (250) + hitch weight (250) + pin weight (2045) .... = 2995 lbs total paylod capacity needed (what about fuel?)

I have been looking at trucks on the dealer lots to look at the payload capacity stickers on the door frame compared to the window sticker to try to find a truck that is close to what I would like to order. Im having trouble finding a SB truck on the lot with the fifth wheel factory puck package. That is why I am looking at ordering.

Any thoughts, input, or help is appreciated...
I believe they calculate a full tank of fuel in their numbers.
Your 2045 dry pin weight could be north of 3000 once you load up your camping supplies, batteries, propane etc etc.and depending where your fresh water tank is located you could be even heavier if hauling water.
My vote...3500 Ram all the way
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Old 07-16-2018, 07:20 AM   #6
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Go 1 ton and be done with it. Leaves room for upgrading later. Be careful of suspension and different packages though. All F250 and F350 suspensions are not the same.
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Old 07-16-2018, 08:35 AM   #7
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Based on your numbers I'd definitely recommend the F350. The F250 could put you right on the edge or even over your payload. You never know what your pin weight is going to be till you load it. The F350 will give you the buffer to deal with the unexpected, now and in the future.

The only downside I can think of (with a F350) is any special licensing, registration, and/or insurance requirements that may exist in your state. The F350's higher GVWR (>10,000 lbs.) may put you it into a commercial category in some states.
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Old 07-16-2018, 10:26 AM   #8
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Here are the numbers on my F250 6.7L diesel CrewCab SB:
Curb Weight 7806 lbs
GVWR 10000 lbs
GCVWR 22000 lbs
Payload 2194 lbs
Tow capacity 14,100 lbs

Obviously have the 10K GVWR rating and also the truck camper package which gives me the overload springs. Depending on 4 adults and their weights you'll never be under the limits with a large pin load.

Plus CA makes me pay luxury tax for weight of the truck....Reg was $720. I will say the 6.7L diesel is awesome. We will be upgrading to a larger bumper pull shortly which will put the truck just under its maximum loads.

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Old 07-16-2018, 11:26 AM   #9
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We currently have a half ton and a bumper tow, but are looking to get into a 5th wheel at some point in the near future. We're not exactly sure which one, but of the ones we're interested in, some could be pulled with a 3/4 ton, some only with a 1 ton, and others only with a DRW 1 ton. We feel we'll just go directly to the SRW 1 ton. I don't want a dually for every day driving, so its down to a SRW 1 ton and a 3/4 ton.

The differences between them as I see it:
- price diff is not enough to make a difference at the prices for these things
- ride quality is not enough to make a difference, if there is any. The SRW 1 ton and 3/4 tons are very similar and in some cases, the only difference is the addition of an extra leaf, which won't even engage until you apply load, so the rides should be very close.
- payload capabilities of 1 ton are so much better, that it opens up a bunch of other trailer options as well as would make me feel even more comfortable towing a trailer that the 3/4 ton would have towed.

All in all, I feel going to the 1 ton is the way to go. SRW if you want a daily driver in town, then go DRW if you need a giant trailer (or to 450/4500 type range if you want even bigger).
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Old 07-16-2018, 04:25 PM   #10
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Quote:
Originally Posted by Fyrehuntr View Post

Upgrading tow vehicle and camper soon. Doing lots of reading and research to make sure I get the right TV. Fifth wheel wanted is Eagle 321rsts; stated hitch weight 2045 lbs; stated gvwr 12700 lbs. Truck choice is Ford F250 or F350; SRW CC SB 4X4 Diesel. Would like the truck to fit in my garage. Test drove an F250 with that basic set-up and it fit. Concerned about payload capacity of F250. Looking for input from those who are in the know on determining actual “towing math” so I dont exceed the truck’s ratings.

Payload weight = people (450) + cargo (250) + hitch weight (250) + pin weight (2045) .... = 2995 lbs total paylod capacity needed (what about fuel?)

I have been looking at trucks on the dealer lots to look at the payload capacity stickers on the door frame compared to the window sticker to try to find a truck that is close to what I would like to order. Im having trouble finding a SB truck on the lot with the fifth wheel factory puck package. That is why I am looking at ordering.

Any thoughts, input, or help is appreciated...
At max gross trailer weight of 12,700#, your pin weight should be 20-25% (2540# - 3175#). the 2045# pin weight is DRY pin weight for your desired 5th wheel.

Since 2015, all light truck payloads and tow ratings are SAE J2807 compliant:
http://fifthwheelst.com/documents/to...ds-2016-02.pdf

Payload is GVWR - curb weight.

Go with the 350.
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