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Thread: Question about towing and GVWR
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02-22-2021, 01:06 PM #41
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That's alotta good info BobNColo. Thanks. I will say there are some exceptions to the 'no built in brake controller, not setup to tow' rule. My last rig was a Minnie Winnie on an E450 chassis. I eventually pulled a car behind it on a tow dolly. Tow rating of the hitch was 5k and tongue weight of 500lbs. My car and dolly were about 1500 under that, but although pre-wired for it, the RV did not come with a built-in break controller. The Prodigy controller WAS plug and play, but I did have to go buy one. We later switched to the Mini Cooper 6spd manual towing 4 wheels down as it was lighter and waaaaaayyy easier to hook up. That rig was one of the main reasons I wanted the Cummins in our latest truck. That Ford 6.8L Triton V-10 worked pretty hard trying to get up a hill with a car behind it. No problems braking, or when a semi- would pass, but uphill, you had to know what you were doing. Suffice it to say, more semi trucks passed me than the other way around.
2021 GDRV Reflection 320MKS 5ver (hauled by The Beast)
The Beast - 2019 RAM 3500 Longhorn, CC, LB, DRW, 6.7L Cummins HO, Aisin 6spd, 4wd
Previous: 2005 Minnie Winnie Class C towing 2014 Mini Cooper Countryman S (both 4 sale)
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02-22-2021, 01:14 PM #42
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Very interesting thread and great reading material!!! I/we own a similiar but smaller trailer (2400BH). As most have said, if your within your limits, even at the max, your vehicle will work. We recently upgraded our TV to a 3/4 ton and WOW, the difference is definitely noticeable. We had ZERO issues towing our setup with a 1/2 ton and we were definitely at the MAX. With COVID-19 and the shortage of 1/2 ton trucks, our trade in value was in my opinion way above normal so we decided to look at 3/4 ton trucks and ultimately made a purchase. The ride quality unloaded is still fantastic, and in my case, the gas version 3/4 ton truck get roughly the same MPG's so in my opinion, if you do decide to upgrade your truck, you will be much, much happier. But if you can't, stay within limits and you'll be just fine. Best of luck, stay safe and enjoy the memories with your rig and family!!!!
2020 GMC Sierra 2500 AT4 6.6L Gasser
2020 Imagine 2400BH
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02-22-2021, 02:28 PM #43
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Wow! 1,140 lbs tongue weight with trailer weight of only 6,480 lbs. That’s right at 17.5%. Is that with a WD hitch properly set up?
Your loaded trailer weight is close to ours but the tongue weight is almost 300 lbs. heavier. We don’t travel with fresh water in the tank but do keep about 5 gals in the black tank. Our pass thru storage area is close to full, but not much heavy stuff. We also tend to throw the last minute travel items on the floor in the shower. Hard to understand why our tongue weights are so different.
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02-22-2021, 05:07 PM #442021 398M Full Body Paint 8k axles. LRH tires. Disc brakes.
Two bathrooms, no waiting 155 fresh, 104 black, 104 grey 1860 watts solar.
800AH BattleBorn Batteries No campgrounds 100% boondocking
2020 Silverado High Country 3500 dually crewcab Duramax Allison
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02-23-2021, 07:33 AM #45
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You are correct, but you don’t get tongue weight from a Catscale either. You only get axle weights. (And yes, I know you can determine tongue weight from differences in the axle weights.) But I’m still amazed how one gets that much tongue weight with so little trailer weight. I couldn’t get that tongue weight on our 2600RB if I loaded everything on the tongue at the hitch ball.
The 1,140 tongue weight is 516 lbs over our delivered hitch weight from the Vehicle Weight Information Sheet. The 6,480 lbs trailer weight is only 402 lbs over the delivered UVW from the same info sheet. If I put all 402 lbs on the hitch ball, we would still be 100 lbs. under the stated tongue weight.
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02-23-2021, 09:06 AM #46
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Here are my CAT scale weights when we had a 2015 Silverado 1500. Truck alone= Steer Axle: 3480 Drive Axle 2580, w/WD= Steer Axle: 3540 Drive Axle:3520 trailer:5780, wo/WD= Steer Axle:3280 Drive Axle:3940 Trailer: 5640
This is for a 2400 BH and I still struggle interpreting these number so hopefully someone will verify that this puts me in the 1K tongue weight range which in my case is almost 20%.
This is the calculator I used/found on the web..... http://towingplanner.com/ActualWeigh...ailerCatScales
Side note: My GVW is 7060 with a GVWR of 7100. This is the main reason we decided to upgrade our TV.Last edited by Tgunter5; 02-23-2021 at 09:13 AM.
2020 GMC Sierra 2500 AT4 6.6L Gasser
2020 Imagine 2400BH
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02-23-2021, 10:41 AM #47
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Add your tow vehicles combined axle weights with the trailer connected but without the WD engaged.
Subtract your tow vehicles combined axle weights w/o the trailer connected.
7,220 - 6,060 = 1,160 lbs if my math is correct.
I still struggle with how you can get that tongue weight with that trailer weight.
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02-23-2021, 11:14 AM #48
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well let me confuse you even further!!! Here are my numbers with the EXACT same trailer but our new TV........Truck alone= Steer Axle:4300 Drive Axle:3540 , w/WD= Steer Axle:4200 Drive Axle:4660 trailer:5960, wo/WD= Steer Axle:3980 Drive Axle:4680 Trailer:5940
How is the tongue weight so much different???? Like I said, its hard for me to interpret the numbers but that link breaks everything down for me and the camper weights are within 40lbs of each other, the trucks are obviously gonna be different but I cant explain the tongue weight difference??? I don't mean to hi-jack this thread, I just find it very, very odd2020 GMC Sierra 2500 AT4 6.6L Gasser
2020 Imagine 2400BH
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02-23-2021, 11:46 AM #49
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Your tongue weight lost 340 lbs by just switching trucks? Not likely. The tongue weight from your recent readings make much more sense though. At 820 lbs, you tongue weight is about 13.7% of the trailers weight.
The tongue weight on our 2600RB is only 750 lbs. That is from direct measurement using a tongue weight guage.
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02-23-2021, 12:31 PM #50
Here is something to keep in mind : TW on a TT can vary a LOT in the course of a trip. Fresh water moves from its tank to the black/grey tanks. Food gets eaten and leaves the pantry/fridge ending up in the black tank. Propane gets consumed and disappears. Clean clothes become soiled and change locations....etc. And everyone loads their TT different, and has different usage patterns. .
I am not suprised at all by the different numbers reported.... In fact it is what I expect.
2021 398M Full Body Paint 8k axles. LRH tires. Disc brakes.
Two bathrooms, no waiting 155 fresh, 104 black, 104 grey 1860 watts solar.
800AH BattleBorn Batteries No campgrounds 100% boondocking
2020 Silverado High Country 3500 dually crewcab Duramax Allison
Charging Lithium Batteries From...
Today, 12:46 PM in Electrical System and Wiring