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Old 08-27-2015, 11:14 AM   #1
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2015 GMC HD2500 Denali capability

GMC HD2500 Duramax with GAWR rear of 6200#, GVWR of 10,000# and a curb weight of 6255#.. I have load rated E tires on the truck.
Question is would it be a good TV to pull a 5er weighing 14800# with a TW of 2850#.
It looks like I would be within the manufacturers recommendations.
Am I missing anything that should be a concerned?
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Old 08-27-2015, 11:29 AM   #2
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Although you may be under on the trucks GVWR & GCWR, you could very easily be over on the RAWR, because the numbers you have listed give no indication of the available payload on the rear axle.
Remember you need to include the weight of the 5er hitch , as well as the pin weight of the trailer , in all calculations .

JMHO: Fill the truck with fuel, and your regular compliment of passengers, and go to the scale and get your , front & rear axle weights, to compare to the ratings . I'm thinking that 5er should be on a 1 ton dually.
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Old 08-27-2015, 11:38 AM   #3
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Quote:
Originally Posted by chrisansilve View Post
GMC HD2500 Duramax with GAWR rear of 6200#, GVWR of 10,000# and a curb weight of 6255#.. I have load rated E tires on the truck.
Question is would it be a good TV to pull a 5er weighing 14800# with a TW of 2850#.
It looks like I would be within the manufacturers recommendations.
Am I missing anything that should be a concerned?
How do you know the tongue weight is 2,850# ?

Is the 14,800# the MAX the RV will weigh?

The fact is people load more and more into their RV's and 25% pin is easily obtained.

So yes lots of people do what you are talking about but take it from someone that has been at this for a while you WILL be over your rear tires capacity!

The RV pin weight almost exclusively lands on the rear tires. On that rig about 100# will transfer to the front axle, that is if you have a long bed truck and your hitch is full forward.
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Old 08-27-2015, 02:38 PM   #4
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I have a 5er that weighs 15,500 loaded. Not much heavier than your 14,800. I use a dually and have been very happy with that combination.
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Old 08-27-2015, 05:00 PM   #5
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Originally Posted by Cummins12V98 View Post
How do you know the tongue weight is 2,850# ?

Is the 14,800# the MAX the RV will weigh?

The fact is people load more and more into their RV's and 25% pin is easily obtained.

So yes lots of people do what you are talking about but take it from someone that has been at this for a while you WILL be over your rear tires capacity!

The RV pin weight almost exclusively lands on the rear tires. On that rig about 100# will transfer to the front axle, that is if you have a long bed truck and your hitch is full forward.
Well I did not make mention of bed lenth, its 6 1/2 foot. Also did not mention I'm adding a Onan 5.5 LP genny, thats 290#. So really pushing the envelope here. I just checked on the Goodyear tire, 265/60/60 Load range E are rated for 3195. So are we now good on tires. But its still going to be close.
To close for comfort maybe?
Will adding air bags help any at all?
With a 6 1/2 bed how much weight will be transfered to the front?
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Old 08-27-2015, 06:54 PM   #6
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Without knowing your trucks empty weight on the rear axle , and RAWR ( Rear Axle Weight Rating ) you don't know if the tries are adequate , until you hitch up to the 5er and run over the scales.
If your 5er's dry weight and empty pin weight are the one's you listed in the first post, you can expect the trailers loaded pin weight , plus the weight of the 5th wheel hitch , to run in the neighbourhood of 3,500 lbs.
The hitch installed location ( pin located 2" ahead of the rear axle centerline , rec-commended) will only put about 150 lbs. forward to the front axle.
So far , I'll have to say this combination will be over weight on the rear axle.
Air bags , will only help , level and maybe add some sway control, BUT, do not increase carrying capacity. Overweight is just that , overweight.


EDIT: OK re-read your original post . You gave a GAWR rear of 6200 ( I refer to that as RAWR ) but if the tires are only 3195 each , that's only 6390 . The tires are a bare minimum , if your only loaded to the 6200 lbs on the rear.
If you take your truck to the scales and get your axles weighed , fuel of fuel with all passengers that would be on a trip and any gear that you would carry in the truck ( tools etc. ) I'm sure you'll find you don't have the capacity to tow this 5er.
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Old 08-27-2015, 07:22 PM   #7
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Well I did not make mention of bed lenth, its 6 1/2 foot. Also did not mention I'm adding a Onan 5.5 LP genny, thats 290#. So really pushing the envelope here. I just checked on the Goodyear tire, 265/60/60 Load range E are rated for 3195. So are we now good on tires. But its still going to be close.
To close for comfort maybe?
Will adding air bags help any at all?
With a 6 1/2 bed how much weight will be transfered to the front?
You really need to re think this.

With a 6.5' bed it all depends on where you place the kingpin when traveling. If dead of rear axle by 2" you may add 100# so then if you are behind the axle you are actually talking weight from the front and transferring to the rear.

If you are insistent on the comb you are referring to I would add air bags and 19.5" tires and wheels.
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Old 08-27-2015, 07:28 PM   #8
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Originally Posted by Cummins12V98 View Post
You really need to re think this.

With a 6.5' bed it all depends on where you place the kingpin when traveling. If dead of rear axle by 2" you may add 100# so then if you are behind the axle you are actually talking weight from the front and transferring to the rear.

If you are insistent on the comb you are referring to I would add air bags and 19.5" tires and wheels.
Currently have 265/60/20's Goodyear Wrangler load range E.
The Hitch will be 2" forward. non slider Reese...
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Old 08-27-2015, 07:41 PM   #9
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To clear the air the 5er is going to be a Cardinal 3975FB. Just using the weights as advertised. The catch is the Denali is new, were trading our 2014 Itaska Merdian 36M DP in on the 5er. We are wanting more room and a bath and a 1/2. Really thought the HD2500 would be enough truck. I'm gonna try it, after we pickup the 5er up Im gonna scale it out and see where I end up. Gonna be an expensive trial run if it doesn't play out. The hitch and airbags will be installed 1st of next week and take delivery by the end, we will see.
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Old 08-27-2015, 08:31 PM   #10
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I believe the Denali version of the 2500 truck has a reduced maximum tow capacity compared to the normal 2500. I believe it only has a 13k or 14k maximum. A look at your owners manual will tell. I think it's the air shocks on the back that limit the tow rating.

Chad
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Old 08-27-2015, 09:00 PM   #11
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2500HD maximum payload of 4,212 pounds
2500HD conventional towing capacity of 13,000 pounds (5897 kg)
2500HD fifth-wheel towing capacity of 17,800 pounds (8,074 kg)
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Old 08-27-2015, 09:05 PM   #12
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Maximum 5th wheel weight as stated above as long as GCWR doesn't exceed 24,500
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Old 08-28-2015, 09:52 AM   #13
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That 2500 will do fine with the Cardinal 3975FB especially with air bags added.
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Old 08-28-2015, 10:07 AM   #14
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You are really pushing the limits!!!!! I wouldn't feel comfortable with this combo as the most important factor that needs to be weighed in is ,will it be safe enough to stop especially down a grade. Air bags only level the truck it doesn't add any additional towing pounds or help you accelerate or stop. I don't want to rant on but i see this all the time. People buy the tow vehicle first then try and build the trailer around it. Again just my opinion but i would not want to be in front of you if you needed to stop quickly. Get a 1 ton and feel very comfortable.
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