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Originally posted by autos.yahoo.com:
This truck is a 2004 3500 SLT with 7,000 miles, 5.9 high output diesel rated at 325 hp., 4.10 axel ratio and Michelin Lt265/70R17 tires.
The truck is very comfortable and easy to drive with good roadability.
My only complaint is fuel milage.
On the open road at 65mph and no load milage averages about 14mpg and towing a 14,000 lb 5th wheel fuel consumption is about 9-12 mpg.
Okay. Here are some numbers on stock diesel 3500s. I suppose it would be possible to get 20ish mpg with a good chip. But I don't think you realize what those massive tires do. Truckin' magazine took a Ram and dyno'd it before and after putting tires not even that big on. After the large tires, it was over 20hp less, they had to chip it just to get back to stock power. So I seriously doubt someone could get 25mpg with THAT particular setup. But I'm perfectly willing to concede my argument if you'll provide credible sources stating otherwise.
