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Old 04-10-2013, 10:32 PM   #15
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We wound up buying a slightly heavier trailer: 2009 Carriage Domani, 32' 5th wheel, GVWR 11,800. We are still looking at this 2005 Silverado 2500HD, long bed, Duramax, Allison, GVWR 9,200, Rear axle 6,200 pounds, 3:73 axle. Factory oil cooler, trans cooler, brake capacity 9,900 pounds. I am thinking this truck will be fine with this trailer.

Any opinions?????

Thank you in advance.
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Old 04-10-2013, 10:57 PM   #16
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Still the same situation as before--with a GVWR of 11,800, pin weight will be around 2000-2100. With the 6200lb axle rating, and a 2000lb pin weight, you are probably going to be over the axle rating--and since GM uses the tire rating as the limiting factor, you are probably going to be over the tire rating for sure. I, for one, would never tow with the tires overloaded.
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Old 04-11-2013, 12:07 AM   #17
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What is the solution, DRW?
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Old 04-12-2013, 12:08 AM   #18
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Quote:
Originally Posted by wingnut60 View Post
Still the same situation as before--with a GVWR of 11,800, pin weight will be around 2000-2100. With the 6200lb axle rating, and a 2000lb pin weight, you are probably going to be over the axle rating--and since GM uses the tire rating as the limiting factor, you are probably going to be over the tire rating for sure. I, for one, would never tow with the tires overloaded.
Joe
I towed a similar unit with 3000lbs pin weight for 9 years and over 60k miles on tires bought on price. It was on a 98 GM 2500 diesel with 225HP and 425lbs torque. Truck was rated for 8600lbs trailer while same truck with 8.1 was rated at 12000lbs. It was the norm for the 6,5, GM rated them low and we all put them to work. Pour engine but great tranny. Never had any issues with the motor. Always kept proper brakes because the front disc pads would wear out fast.
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Old 04-12-2013, 09:54 AM   #19
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Originally Posted by BriaLynne View Post
We wound up buying a slightly heavier trailer: 2009 Carriage Domani, 32' 5th wheel, GVWR 11,800. We are still looking at this 2005 Silverado 2500HD, long bed, Duramax, Allison, GVWR 9,200, Rear axle 6,200 pounds, 3:73 axle. Factory oil cooler, trans cooler, brake capacity 9,900 pounds. I am thinking this truck will be fine with this trailer.

Any opinions?????

Thank you in advance.
Use this weight calculator to accurately and safely match a tow vehicle and trailer. Some believe only a semi-tractor can safely tow a 5er, not so. This calculator offers the safety option of 20% that most full-timers use, however, your truck will safely handle up to its maximum ratings -IF the calculator instructions are followed exactly.
I used to tow a 10500# GVW 5er with a 96 Dodge CTD, 3/4T and it was a very good matchup. We bought a 15,500# GVW 5er and my Dodge was overloaded and underpowered. I bought a 2002 Chevy Duramax dually that is a proper match for the 5er 2 weeks later. The truck is just under the maximum ratings, tows and stops the 5er with no trouble.
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Old 04-12-2013, 11:05 AM   #20
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BriaLynne,
Probably the only way you would know for sure is to weigh the truck, and get axle weights. If you know the axle weight when loaded for camping (people, gear, hitch) and then use the 2000lb estimate on the pin weight--will that still be near 6200lbs?
I don't want to say it can't/shouldn't be done--lots of people do. It is just good to know where you are on weights. But, no matter what, I would not go over the combined weight capacity of the 2 rear tires.
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Old 04-12-2013, 04:03 PM   #21
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Still the same situation as before--with a GVWR of 11,800, pin weight will be around 2000-2100. With the 6200lb axle rating, and a 2000lb pin weight, you are probably going to be over the axle rating--and since GM uses the tire rating as the limiting factor, you are probably going to be over the tire rating for sure. I, for one, would never tow with the tires overloaded.
Joe
The axle rating is 10,900 lbs. for these trucks. Hardly a concern. The weak link is the tires and they can be easily changed. Have two friends who have been pulling 5th-wheels for years that weigh over 13K fully loaded and using 3/4 ton Duramax diesels with zero problems. GM is quite different from Ford and Doge in that GM uses the same frame, suspension, drive train, axles and wheel bearings for its 3/4 ton and 1-ton trucks. The 1-tons have the DRW option but that is not needed unless the pin weight is going to be over 4,000 lbs. and the 1-ton trucks currently have rear rotors that are 3% larger and an extra set of leaf springs.

I would not go with a 2005 Duramax as the early models had a problem with the crimped head gasket design and with a blown head gasket if you are lucky the engine overheats, if you are not lucky the coolant gets into the motor oil and the engine is toast. Better to go with the 2006-2007 (Classic version) diesels.
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Old 04-12-2013, 04:18 PM   #22
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I pulled a 2004 Newmar Kountry Star over 100,000 miles in four years with a 2004 2500 Chevy with DMax and Allison. It was a long bed 2wd extended cab. I pulled through Montana and to California twice and all over the east and south. Not one problem at all. Kountry Star was was maxed at 16,400. Mine was 15,000 loaded with our things.

Mileage was consistently 10-11. The computer on the truck said more but 10-11 is putting a pencil to it with dozens of fill ups. 4wd will knock 1-2 off of that and dual wheels on a 3500 will knock another 1-2 off.

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Old 04-12-2013, 07:45 PM   #23
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elkhornsun,
Where did you get an axle rating of 10,900 on a SRW GM truck? For that matter, in a dually?
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Old 04-14-2013, 09:27 PM   #24
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I hear lots of people warn of LLY overheating but I've never experienced it with mine. It must have been only a select few of those engines. I tow up to 13,000 thru the mountains of VA and WV with no overheating.

That truck should be fine with that trailer. Just be sure you're not over the tire ratings in the rear.
The axle is rated by it's manufacturer (AAM) at 10,912 pounds. It's rated by GM lower. I carry around 9,000 on my dually's rear axle with my truck camper and boat.
Going over the GVWR of the truck doesn't make much difference. It's the axle and tire ratings you have to look at. Commercial truckers and DOT don't care about GVWR they only care about axle and tire ratings.
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Old 04-14-2013, 10:55 PM   #25
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I guess I am lost now--we are supposed to forget what the vehicle mfg ratings are and look up the axle mfg ratings?
I am interested in the previous thread where its an "easy change of tires" to match up with a 10,900lb axle on a 3/4T pickup? Is there a tire out there that rates at 5,450lb for a 3/4T axle?
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Old 04-15-2013, 08:13 PM   #26
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Many companies sell 19.5" tires in load ratings F,G, and H. These can carry up to 4,940 pounds each. 19.5" wheels for just about any HD pick-up are made by Vision, Rickson, and others. So, yes, a new set of wheels and tires will allow a 2500 or 3500 pick-up to to take better advantage of it's axle's capabilities.
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Old 04-15-2013, 09:12 PM   #27
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Thank you to all for the input. I bumped into the following truck and bought it yesterday: 2005 Dodge Ram 3500, long bed, SRW, Quad Cab, 2WD, 5.9L Cummins, Auto, 3:73, 9,900 GVWR, 3,250 payload, 14,200 tow, 21,000 GCWR, 55,000 miles, fitted with a Reese 16k 5th wheel hitch, and fresh E-rated Michelin's. I am confident it will do a good job with the Domani 5th wheel we just purchased. The Domani Has a GVWR of 11,800. We are fair-weather RVers and can't imagine a situation where we would want to tow in snow, ice, or mud. We live in an area that gets some snow but we each have 4WD daily drivers for those situations..
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Old 04-16-2013, 10:15 AM   #28
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My 450 has the 19.5s--and a 9500lb RAWR by Ford. And I am sure the axle itself would handle much more. Just because it could, I can't see taking one tire off each side and running it that way.
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