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Old 07-16-2013, 12:55 PM   #1
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Question Tow vehicle selection confusion

I am looking at a Chev. Silverado 3500HD to pull the 5th wheel trailer I plan on buying.

The trailer specs indicate a fully loaded weight of 15600#. IN checking out theSilversdao specs, the 3500 hqs q curb wgt. of 7457# and a max payload of 4143# or total GVWR of 11,500. Further down on thesheet I read that the max 5th wheel towing weight for an SWR is 16,800#. So it would appear that the 3500HD would do the trick.

HOWEVER, it also lists a GCWR of 24,500# . If I add the truck GVW and the trailer GVR i get 28,400#! What am I missing?
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Old 07-16-2013, 01:07 PM   #2
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1st, pay little attention to the advertised weight of the 5er. Tell, don't ask the dealer to provide a certified unladen weight. Then figure, water, propane, food gear, toys and whatever and add that. When you have all the numbers, consider a dually, you won't be sorry.
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Old 07-16-2013, 01:28 PM   #3
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Your missing the 20% of the 5ers weight that is being carried as part of the trucks payload. Pin weight.
In order to handle properly 20% of the GVWR of the trailer will be on the truck. 15,600 5er will put approx. 3000 lbs on the pin. that weight + the hitch weight is going to put a SRW P/U at or over RAWR , go with a dually , you won't regret it.

REMEMBER, P/Us do their trailer tow capacity with only the driver in the P/U nothing else . So everything you carry in the truck has to come off the trailer weight.
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Old 07-16-2013, 06:24 PM   #4
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kayo,
You will be right at your max rear GAWR maybe a little over, and probably right at your GVWR or slightly under. If you are dead set against a dually then load it up and head for the local CAT scales, but if you have a choice, go with the dually, you will be a lot more comfortble towing and won't have to worry about being right on the edge. 3000# pin weight will put you right around 6500 to 6650# on your rear axle weights.
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Old 07-16-2013, 06:56 PM   #5
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Sounds like you are well into DRW country. The alternate if you have to have a SRW is to look for a smaller (lighter weight) trailer.

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Old 07-16-2013, 09:22 PM   #6
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Quote:
Originally Posted by kayo View Post
I am looking at a Chev. Silverado 3500HD to pull the 5th wheel trailer I plan on buying.

The trailer specs indicate a fully loaded weight of 15600#. IN checking out theSilversdao specs, the 3500 hqs q curb wgt. of 7457# and a max payload of 4143# or total GVWR of 11,500. Further down on thesheet I read that the max 5th wheel towing weight for an SWR is 16,800#. So it would appear that the 3500HD would do the trick.

HOWEVER, it also lists a GCWR of 24,500# . If I add the truck GVW and the trailer GVR i get 28,400#! What am I missing?
Part of the trailer gvw is pin weight on the truck. So do not add both gvw.
Your truck weight is 7457 plus trailer at 15600 equals 23057 leaving 1443 left to load on your truck.
While the rear axle is not over loaded the SRW can tow it.
Remember that the trailer gvw includes pin weight of 3000 lbs, and the truck can load 4143 leaving additional load of 1143 on the truck. So the 24500 gcvw is not exceeded.
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Old 07-16-2013, 09:24 PM   #7
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If you're looking for the weight on the Chevy 3500 HD SRW I have one and the total gross weight of that vehicle with a full tank of fuel is 8140 ( I weigh 225) that might help. I pull a 37' 13,000 5er w/2200 tongue weight and have plenty of room to spare
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Old 07-16-2013, 09:37 PM   #8
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I might add my Chevy 3500 is a crew cab 4x4 18" tires
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Old 07-16-2013, 11:31 PM   #9
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The truck manufacturer assigns his trucks GCWR. Its always lower than the sum of the trucks GVWR and the trailers GVWR.
Now if you are using your truck to haul commercially then you use the trucks GVWR and the trailers GVWR for your declared gross combined operating weight.

Using GM weight calculator shows a loaded out LTZ package in the 2wd extended cab Dmax/A has a 7050 RAWR and a 11500 GVWR. The weight calculator shows this truck at just over 7000 lbs. Add 150 lb hitch and 300 lbs for folks and gear your looking at approx 7400-7500 lbs gross which leaves around a 4000 lb GVWR payload. Remember GVWR is spread out on the trucks front and rear axle. Or as some RV folks do simply use it for a rear axle payload.

Use the trucks RAWR or GVWR for figuring payloads works out about the same. Either way the SRW will be a good choice for a trailer that size.
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Old 07-17-2013, 10:24 AM   #10
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Quote:
Originally Posted by kayo View Post
If I add the truck GVW and the trailer GVR i get 28,400#! What am I missing?
Yeah, as others have mentioned, you're counting about 3,120 pounds of pin weight twice. So if both pickup and trailer are loaded to the GVWR, you'll gross about 25,280. But that would exceed the 24,500 GCWR of the tow vehicle, so you cannot load both to the GVWR without being slightly overloaded over the GCWR. That difference of less than 1,000 pounds is probably caused by rounding and scale error, so it's not critical.

And you're also relying on GM weight ratings, which can result in your being overloaded when fully loaded and on the road.

As a general rule, ignore tow ratings and payload ratings and compute your own. The GVWR and GCWR are firm numbers you can use, but tow and payload ratings assume an empty pickup with absolutely nothing in it but a skinny driver.

The 2013 GM 3500 HD SRW 4x4 with 8' bed has a GVWR of 11,600 pounds. It's going to weigh between 8,000 and 9,000 pounds when wet and loaded and ready to back up to the 5er. If it weighs only 8,000 pounds, that leaves a max of 3,600 pounds for hitch weight. But if it weighs 9,000 pounds, then that leaves only 2,600 pounds for hitch weight. The hitch weight on a wet and loaded 5er with a GVWR of 11,500 pounds will be about 3,000 to 3,100 pounds. So you have to be aware of what you haul in the pickup so you won't be overloaded when on the road.

If the 5er grosses 15,500 wet and loaded, that leaves 9,000 pounds for the wet and loaded weight of the pickup before you exceed the GCWR. That's a reasonable max weight for the pickup, so GCWR is probably not your limiter. GVWR of the GM pickup is probably your limiter, so that means hitch weight is your main concern.

So that SRW pickup will probably be an okay match for that trailer, but it will be right up against the GVWR limit, if not overloaded. So if you don't want to be constantly worried about being overloaded, then consider getting the DRW version of that pickup instead of the SRW.
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