DRW vs SRW Trucks

lincster wrote:

jshupe wrote:

tinner12002 wrote:

joebedford wrote:
@jshupe: you're right but we're looking at different numbers.

I assumed that rig would have a GVWR of 21K but it's only 19.5K so he's only 3500 over max tow rating.

Its just a matter of time before towing over your trucks rating will start to show up on equipment failures, tranny, rear axle or more. Those ratings are there for a reason, not just #s to look at and say ah those are just there for ***** and giggles. Everyone just needs to do what their pocketbook can afford and what they feel comfortable with.

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*Rear axles on a dually have different hubs and deeper rotors on the end. Still an AAM 11.5 with identical gearing. AAM rates both for 10900#.
Identical engine (can be confirmed by replacement part #s)
- Identical transmission (can be confirmed by replacement part #s)
- Identical transfer case (can be confirmed by replacement part #s)
- Identical axles (can be confirmed by replacement part #s)*
- Identical brakes (can be confirmed by replacement part #s)
- Identical front suspension (can be confirmed by replacement part #s)
- Different wheels and tires**
- Different rear suspension***

**Wheels on my truck have a 4500# rating. Tires a 4950# rating. Factory had 3150#.
***My rear suspension has been completely upgraded to what is considered an upgrade for DRW trucks

What exact components are going to fail? Please tell me how my engine, transmission, and rear axle are suddenly going to fail due to a door sticker. I researched this meticulously, spending an enormous amount of time digging into parts diagrams, and have yet to find the answer. I'm well within the limits of a DRW but over the limits of a SRW. Limits that happen to be directly tied to only suspension and tires, it seems, both of which have been upgraded accordingly. The only advantage to a DRW for me at this time would be if I were getting anywhere close to the 9000# "weak link" of the wheels (4500# x2) for the RAW.

Identical engine (can be confirmed by replacement part #s) True
- Identical transmission (can be confirmed by replacement part #s) True
- Identical transfer case (can be confirmed by replacement part #s) True
- Identical axles (can be confirmed by replacement part #s)* Not True
- Identical brakes (can be confirmed by replacement part #s) Not True
- Identical front suspension (can be confirmed by replacement part #s)

Go to the body builder guide for Ford and you can find tables to support what I disagree with.

DRW gearing is 3.73. You can't get that on a SRW.

I am giving numbers for my 2012 Ford. I did a lot of research before I bought.
Other manufactures may differ, I am referring to Ford to dispute your claims.

And you can clearly see in my sig that I drive a GM. They use the same 3.73 gears for all Duramax engines - SRW or DRW. You can confirm here:

https://www.chevrolet.com/content/dam/Chevrolet/northamerica/usa/nscwebsite/en/Home/Vehicles/Commercial/02_PDFs/MY15-Trailering-Guide.pdf

So your issue isn't an issue of SRW vs DRW, it's an issue with Ford's specs.