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06-18-2021, 09:40 AM #1
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New Solitude 378MBS Results with 3500HD SRW
As a preface, I understand a DRW truck is in order here in the long term and it is in the plans, but I was somewhat surprised to how I came out on my 3500HD SRW as we just picked up our new 2021 Grand Design Solitude 378MBS yesterday.
After all I read about how this would probably never work, it looks like I just made it legally for my payload on the truck, tires, and axles. What did I miss or did I just barely pull it off?
- 2019 Silverado 4x4 Crew 3500HD SRW
- 5th wheel was light to medium loaded compared to how we usually travel
- Truck 90% full tank of diesel
- about 100lbs of tools not usually along for the ride need for new 5th delivery
- empty fresh, gray, and black tanks
- wife was along with me and in the truck with me
2016 Silverado 3500HD Duramax CC SRW
2016 Reflection 357BHS
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06-18-2021, 10:50 AM #2
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Looks like you are dead on the GVWR (4940+6560=11,500), pretty good on FAWR and 90 lbs under your RAWR. What does your payload sticker indicate? Do you have a scaled weight for just your tow vehicle? Interested in what your pin weight is.
We pick up our 378 in a few days. UVW on it is 15,220 LB without propane, batteries and w/d combo. UVW does include generator, dual pane windows, 3rd a/c and solar.2022 Solitude 378MBS-R
2021 Ford F450 CC Lariat Ultimate FX4
1966 Shasta Astroflyte (1 year restoration project that is going on year 6)
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06-19-2021, 07:24 AM #3
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Like you have said, you are just under the numbers (490 lbs under the RAWR). Do you have CAT scale numbers of just the truck in the same configuration (weight)? With that, you will be able to figure the pin weight, and the actual weight of the trailer, which you can figure out the pin weight percentage. If that is high, you may be able to load the trailer more to the rear, and unload some of the weight on the truck.
2023 Chevy 3500HD CC SB 4x4 Dmax
2021 GD 320G with 8K axles
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06-24-2021, 12:29 PM #4
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I should have weighed just the tow vehicle as that would have told me pin weight which would be very helpful.
Come to find, the dealer had the fresh water tank about 75% full and I believe that tank is forward of the trailer axles, so maybe some more pin weight on the truck could be saved. The one other factor that I thought of that I am not sure how much it comes into play is that I need to lower my hitch as the trailer was certainly pitched up in the front (I did not notice until we were on our way). It is my understand that puts more weight on the trailer axels, but again, not sure of the exact way to figure that and I am sure there are many factors into play with that.
The camper is back in it's season spot, but I am temped to take it out after being leveled while towing, empty the fresh water tank, and get a separate weight on the tow vehicle.2016 Silverado 3500HD Duramax CC SRW
2016 Reflection 357BHS
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06-24-2021, 12:53 PM #5
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I am just waiting for the ten or so on here saying you are overloaded because you need a 80 percent margin
2021 Imagine 2400 BH
2018 GMC Sierra 4x4 crew2021 Imagine 2400 BH
2018 GMC Sierra 4x4 Crew 1840lb payload
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07-02-2021, 10:28 AM #6
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we plan ordering our 378MBS-R in a few months and pulling it with a F350SRW. If you can say, how much off MSRP were you able to negotiate in todays climate? Going full time this winters. Thanks
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07-02-2021, 11:30 AM #7
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I know this is off topic a bit but my brother just sold his home and bought a 5th wheel toy hauler to live in while he moves to Florida and builds a new house. I was astonished when I saw his weights were when he showed me his CAT Scale receipt. Fortunately, he has a Ram 4500 DRW that has a custom 10' bed on it. He does get quite a few looks driving down the road given how long his truck is....I have no idea what the tow/load ratings are for a 4500 but that is a lot of weight no matter how you look at it. He is on day 3 of his journey from Boise, Idaho to Florida and so far he said it has done great other than his mileage (avg. 7.5mpg). He has no airbags or any sort of supplemental suspension enhancements. I am guessing his pin weight is around 4K lbs and the truck sits level!
SteerAxle: 5620
Drive Axle: 9500
Trailer Axle: 17060
Total Weight: 32180
.Last edited by Heavysledz; 07-02-2021 at 11:32 AM.
Jeff and Debbie
2021 Imagine 2250RK
2015 Ram2500 Laramie CC 6.7 Cummins Diesel w/air-ride auto leveling
USMC Veteran
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07-02-2021, 12:21 PM #8
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07-02-2021, 02:13 PM #9
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Last edited by Heavysledz; 07-02-2021 at 03:28 PM.
Jeff and Debbie
2021 Imagine 2250RK
2015 Ram2500 Laramie CC 6.7 Cummins Diesel w/air-ride auto leveling
USMC Veteran
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07-02-2021, 02:24 PM #10
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best strategie on keeping unit...
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