Originally Posted by Detroit3000
I was always under the assumption that the WDH transfers some of the weight up to the front axle not back to the TT, meaning your tounge weight doesn't change just that your putting less weight on the rear axle and transferring the rest onto the front axle, I going to have to research the WDH a little more now.......
Alright here are the numbers from the CAT scale.
Truck only-2012 Ram Outdoorsman qc 4x4 3.92 axle 17' rims
Front Axle - 3460
Rear Axle - 2820
Gross Weight 6280
Truck and TT with no wdh hooked up
Front Axle - 3060
Rear Axle - 4120
TT axles - 6520
Gross Weight 13700
Truck and TT with wdh hooked up
Front Axle - 3400
Rear Axle - 3640
TT axles - 6640
Gross Weight 13680
From here you can see that there is a little discrepency in their numbers but you can get the overall pictures
340lbs of 400lbs of weight lost from front axle was replaced with WDH hitch. I've set it up with one more washer and it felt heavy so this is how i'm leaving it.
The truck lost 140lbs with weight distribution hooked up. The scales are off by 20lbs so either its 120 or 140 but either way at least 120lbs was transfered back to the tt axles which can also been seen in their TT axle increase.
TW can be determined by the increase it GVW from the truck empty to the truck with no wdh hooked up which is 900lbs.
Hopefully this can help you understand what i'm talking about.
So to help with your question i'm overweight technically. my truck with trailer weighs 7040 which is 340 more the gvwr. If i was to get a crew cab though the gvwr would be 6800lbs and what would mechanically for the truck? NOTHING. The GVWR is determined by the company to what they see being right. Just like the tow ratings. Ford with the ecoboost has a gvwr of 7650lbs and if you add the axle limits they are 7800lbs just like the ram.
This is how i see it. The cooling, engine and rear end was designed for the gcvwr which is 15500 for my truck and i'm about 2000lbs shy of that. The suspension was designed to hold axle ratings. Even though this suspension is softer i am still not on the bump stops at 900lbs tongue weight and i'm over axle ratings at the point. To me the gvwr should be more important when your empty because you have no additional help with braking. My trailer has a gvwr of 9500lbs but weighs 7420 with tongue weight. That means its brakes were designed to stop more weight and can help my tv brakes.
So it really comes down to the suspension as I see it. Yes i'm over but feel the truck is more than capable to hold this weight. If i was over axle ratings I would agree that this is not capable but i'm almost 300lbs from rear axle limit and 500lbs from front axle limit.
Others go strictly by the numbers and are willing to trust what the manufacture tells them (ie. ford having a much higher gvwr like 950lbs more but not having any stronger axle ratings). Every manufacture tests differently and its ultimately what they have to back up and warranty. I have seen what this truck can do and past trucks that my family has owned all being dodge and i'm very comfortable with this set up.
Please feel free to comment as this is all my opinion and not fact by any means.