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**acoleman43** · 07-28-2021, 01:04 PM

I found this on a Sherwood Ford website. If this is correct it is 23,500.

http://www.sherwoodford.ca/blog/2017...wing-capacity/

**ncitro** · 07-28-2021, 01:07 PM

dgerfan Well I have to admit you have me kind of stumped. I consider myself pretty good with the Ford numbers but have never come across this before. From everything you said I think you probably have the 28,700 GCWR, but for kicks I went out and checked my stickers and sure enough it is not printed anywhere. You are correct though, reading those footnotes and given you have the 11,500 package the only option that fits is the 28,700 number.

The good news is it probably does not matter until you upgrade again. The only two possibilities for that wheelbase with the diesel motor and your 18" tires are both greater than your 12k trailer, so you should be fine. You are either fine by a wide margin (2,700 pounds) or a huge margin (8,800 pounds).

**Cate&Rob** · 07-28-2021, 01:21 PM

dgerfan

I have also been shopping trucks and completely agree . . . all the info is posted on a door label for a GM and a complicated search for a Ford.

I think the info pulled from the chart with post #2 is for a DRW and you are asking about a SRW. The 5th wheel number that I see for that column is 15,700.
FWIW . . . the more extensive research that I have done on a 2021 F350 CC SRW is in the 15K ballpark (definitely not 23K), although payload is now significantly less than 3500 lbs.

Rob

**howson** · 07-28-2021, 01:25 PM

dgerfan -- I can't add anything to your actual question, but permit me to comment that whoever purchased that truck originally must have special-ordered it. A 3.31 gear ratio is uncommon to find on a dealer's lot. In fact every single truck I looked at (on a dealer's lot) came with the 3.55 gear set. Between the ridiculous torque of the 6.7 motor and the 3.31 gearing it certainly won't lack for ability to launch, evenly heavily loaded. The penalty, of course, is highway mileage with that gear ratio. Not a terrible amount, but over time 1 to 2 mpg adds up.

**Cate&Rob** · 07-28-2021, 01:35 PM

Originally posted by howson View Post

dgerfan -- I can't add anything to your actual question, but permit me to comment that whoever purchased that truck originally must have special-ordered it. A 3.31 gear ratio is uncommon to find on a dealer's lot. In fact every single truck I looked at (on a dealer's lot) came with the 3.55 gear set. Between the ridiculous torque of the 6.7 motor and the 3.31 gearing it certainly won't lack for ability to launch, evenly heavily loaded. The penalty, of course, is highway mileage with that gear ratio. Not a terrible amount, but over time 1 to 2 mpg adds up.

But . . . a 3.31 should get better mileage (not towing) than a 3.55 ??

Rob

**ncitro** · 07-28-2021, 01:38 PM

Originally posted by Cate&Rob View Post

dgerfan

I have also been shopping trucks and completely agree . . . all the info is posted on a door label for a GM and a complicated search for a Ford.

I think the info pulled from the chart with post #2 is for a DRW and you are asking about a SRW. The 5th wheel number that I see for that column is 15,700.
FWIW . . . the more extensive research that I have done on a 2021 F350 CC SRW is in the 15K ballpark (definitely not 23K), although payload is now significantly less than 3500 lbs.

Rob

Rob hit the nail right on the head. The entry at the bottom of the chart must be for a DRW truck, thats why the GCWR is so much higher. I am used to seeing the chart in post 2 which shows for a F350 SRW Super Cab 4x4 its 15,900 regardless of gearing. That makes a lot more sense. Still well above your trailer weight.

It goes without saying since you obviously are doing your research, that with a fifth wheel in particular payload is almost always going to be your limiting factor. The reverse of that tends to be true, if you are within payload you are almost always (if not always) going to be within GCWR. I would have been surprised to see you had enough payload but were short on tow capacity or GCWR.

**dgerfan** · 07-28-2021, 01:44 PM

howson I think you hit that nail on the head! This truck is a unicorn and that might explain why its hard to determine that actual towing capacity. I have searched thousands of Rams, Chevys and Fords and have landed on this one as its a totally loaded Lariat with 360 camera (a must for me) and a lot of other safety and convenience features for not too much $$$(by today's standards). The only thing that gives me pause is that its a extended cab and I have a 6 year in a car seat. Thanks for everything.

**ncitro** · 07-28-2021, 01:48 PM

Originally posted by dgerfan View Post

howson I think you hit that nail on the head! This truck is a unicorn and that might explain why its hard to determine that actual towing capacity. I have searched thousands of Rams, Chevys and Fords and have landed on this one as its a totally loaded Lariat with 360 camera (a must for me) and a lot of other safety and convenience features for not too much $$$(by today's standards). The only thing that gives me pause is that its a extended cab and I have a 6 year in a car seat. Thanks for everything.

Yeah the fact that its a SuperCab makes it a unicorn by itself. Is it a XLT? With that kind of payload I'd imagine it is. I know around here most SuperCabs were used by guys in the trades and were XL or XLT. It would be rare here to see a SuperCab Lariot or higher.

**dgerfan** · 07-28-2021, 01:59 PM

ncitro The dealer has the window sticker on the website and it shows its a Lariat. Forgive me for asking, I assume by your profile picture that you have at least one child. Do you think having a SuperCab would be pain on a daily basis? We are full timers.

I can make sense of the chart in post #2. I got the chart I included from the Ford US site and it doesn't even show 3.31 gear ratio for a dually. Also it has the F-350 and F-250 broken out into there own sections.

**ncitro** · 07-28-2021, 02:09 PM

Originally posted by dgerfan View Post

The dealer has the window sticker on the website and it shows its a Lariat. Forgive me for asking, I assume by your profile picture that you have at least one child. Do you think having a SuperCab would be pain on a daily basis? We are full timers.

I can make sense of the chart in post #2. I got the chart I included from the Ford US site and it doesn't even show 3.31 gear ratio for a dually. Also it has the F-350 and F-250 broken out into there own sections.

Definitely a unicorn if its a Lariot Super Cab (around here anyway). That's not a bad thing as long as its what you want.

We do have one child, he just turned three. I have had this truck since he was about six months old. We just turned him front facing on our last trip, so most of my experience was rare facing. I considered a Super Cab, I wanted a long bed and thought the shorter wheelbase would help with the turning radius some. I test drove one and even brought it home for a day to put my car seat in and out of it, and see what it was like to climb up and put him in it. It was possible, but not easy. The crew cab definitely makes it much easier to get him in, and we have had him in the car seat with four adults for multiple days of travel (my in laws travel with us frequently) with no issue. We usually put him in the middle seat which makes it easy to get things to him and whatnot. We are not full time, but take long trips separated by a few months at home. We just got back from a 10 week trip west from home (NE Illinois) to Rocky Mountain Park, Utah, Teton, Yellowstone, and back. Truck did amazing (as it should, I am nowhere near its limits), and we had plenty of room. Had my sister in law in the back seat with us for two weeks with our son and had plenty of space.

**acoleman43** · 07-28-2021, 02:34 PM

Another chart seems to show you have 28,200 or 28,700 GCVWR.

**Cate&Rob** · 07-28-2021, 03:00 PM

dgerfan
The problem with the Supercab is the opposing door opening directions. If you get into a parking lot situation with a vehicle beside you, getting you and your stuff and the young one in between these doors and still open both, gets complicated.

Rob

**Cate&Rob** · 07-28-2021, 03:07 PM

If you work through the Ford "fine print" on maximum trailer weight, this comes back to payload. They assume that a bumper pull has a 10% tongue weight and a 5th wheel has a 15% pin weight. Neither of these percentages are particularly relevant with RV trailers. If the truck payload will handle the actual pin weight of the 5th wheel (probably 20%+ of trailer weight) and whatever else you put in the truck . . . the rest of the numbers will work out OK.

Rob

**howson** · 07-28-2021, 03:13 PM

Originally posted by Cate&Rob View Post

But . . . a 3.31 should get better mileage (not towing) than a 3.55 ??

Rob

Did I get it backwards??? Yep, I think I did. So the mileage will be better. Shouldn't affect towing performance one bit--engine is a beast.

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Determining GCWR for Ford F-350

Determining GCWR for Ford F-350

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