Basically the GVWR of our (2500HD) trucks before has been limited by momma GM's safety margin!
4800 front end capacity, same on 3500
+6084 rear axle and spring capacity on 2500HD
10884 lbs spring and axle capacity on a 2500HD.
I have had mine up to about that before with a 3600 lb seed pallet in the bed of the truck. (7000 lbs of truck, stuff and passengers +3600 lbs) The suspension wasn't even down on the bumper stops. I weighed the front and the rear, and my truck wasn't over on either axle. It basically amounts to the fact that GM had only rated the rear axle on the 2500HD to what the std tires were rated for. Also, GM has built in about a 15% saftey margin in the ratings, by rating it at 9200 Lbs, because it is afraid that people will not know how to load their trucks up. It can be done safely if done correctly.
On a side note, if GM just rated the trucks at their max rated capacities, some dummies would put all the weight in the back, and overload their back axle, and tear stuff up!
The 3500 Single rear wheel appears to have the axle out of a one ton, and maybee have another leaf. They upped the rating by 700 lbs by basically putting 3250 or 3300 lb tires on it
Can you say Marketing!
That is all I have to say about that, now if I ordered a new truck, and they had Shortbeds finally available, and the cost wasn't much more, I would get the 3500 over the 2500. Just to be closer within the rated bounds, get the heavier axle and 7" rims.
I am still debating on the 2500HD vs 3500. I am close on the 2500 GVWR (9200) when 5th wheel and family all loaded up. The 3500 is 9900 lbs GVWR however it will only come in 4WD which adds more weight to the vehicle so the 700 lbs you gain from 2500(9200) vs 3500(9900) is not a true figure. I wonder how much weight will be added to a 4wd vs 2wd? I figure 250 to 300 lbs. Also larger fuel tank 34 vs 26. So at 300 lbs more weight plus 70 lbs more fuel =370 lbs. 700lbs -370= 330lbs extra weight gained by purchasing a 3500 over a 2500, Is it worth it? These figures are guestimates.
I think that you are pretty close on your estimates.
Around 300 Lbs for 4x4 Option
And you are going to have the 70 ls of fuel.
You also forgot the longer frame and weight of the larger bed, I would guess probable 250 lbs.
So 700 lbs more capacity - 300, - 70 - 250. Means you have an increased payload of 80 lbs
If you wanted and would prefer a 2wd and a shortbed, then DO NOT, I repeat DO NOT get the 3500 Single rear wheel. You are probable talking about around 3 grand more cost as well and about 2 MPG less fuel economy. HMM.
Buy what you want and need. The 2500HD has plenty of capacity and is pretty well tuff as nails. No if you are going to be running over 10K, then in your case I would suggest a dually, 2wd. ( A dually 2wd with a locker and agressive meats wouldn't go too bad for limited off pavement excursions such as camp sites!)
If you look at the specs in the brochure, For 2004 for the Sierra about 2 pages from the back, the 2500HD has 4800 ft axle, 4800 torsion, 6900 rear axle, 6084 rear spring. The 3500 Dually has 4800/4800, 9200 Rear axle, 8600 rear spring. The 3500 single rear wheel is listed as 4800/4800, 9200 rear axle 6500 REAR SPRING.
The way that I interpreted that, was that was that the axle was different between the 2500HD and the 3500 Dually.
I may be wrong, but thought that I would post the specs out of the book.
I don't think there is a difference between the 3500 and 2500HD axle, they both currently use the same axle so why would GM out of the blue change? If you look, the axle is rated to 10900 lbs according to AAM. It is the springs, tires, frame, that keep it from holding all that.
durmax tim..were or how do i get onto web site for axle weights..I have read many forums and they all refer to 2500hd,3500srw and 3500drw all having same axle,brakes and frame...is this correct or what ...confused to say the least????
The discussion on the rear axles has come up several times previously, and there is still misinformation out there!
The 2500HD and 3500 dually trucks share the same AAM 1150 rear axle (rated for a maximum of 10,890 pounds per AAM's website). I would assume the new 3500 srw uses that very same axle...why have one different than what the other two trucks use? GM rates the axle for the 2500HD different to cover their hindquarters in case someone overloads a truck and has a failure that would likely happen due to other components. The primary limiting factor on the 2500HD is obviously the OEM tires, since the rear weight capacity is exactly the weight capacity of two OEM tires added together. The new 3500 srw has tires with a few hundred pounds greater weight capacity and an extra spring thrown in, so they can rate the payload capacity for 700 more pounds.
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