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Old 01-24-2013, 08:45 AM   #15
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Name: Brian
Trailer: Boler (B1700RGH) 1979
Alberta
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Quote:
Originally Posted by stevebaz View Post
Do you have over size tires?
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Originally Posted by cpaharley2008 View Post
I think my rear is 3:55 and I do have 20" tires/rims.
20" wheels are factory stock for at least some 2013 Ram 1500 models, so if it has the right tires they are not oversize for the factory's choice of gearing. Also, the stock 20" size appears to be P275/60R20, only 10 mm wider than the base equipment of P265/70R17. Even 10mm can add drag, but I don't think it's Jim's issue with fuel economy.

All of these tires, of course, are huge compared to pickup truck tires of a few years ago.

3.55:1 appears to be the stock rear end ratio, regardless of tire size or engine.
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1979 Boler B1700RGH, pulled by 2004 Toyota Sienna LE 2WD
Information is good. Lack of information is not so good, but misinformation is much worse. Check facts, and apply common sense liberally.
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Old 01-24-2013, 08:53 AM   #16
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Name: jim
Trailer: 2016 2ndGen Escape19 Prairie Schooner pulled by 2014 Dodge Ram Hemi Sport
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I normally get 12 mpg, towing or not. It is just a gas hog.
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Old 01-24-2013, 12:51 PM   #17
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Name: Steve
Trailer: Scamp 13
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You might want to read this site it may help some.
Maximizing MPG with MDS; Tips from the Chrysler Group on Getting the Most Fuel Savings with Its Multi-Displacement System
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Old 01-24-2013, 01:12 PM   #18
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Thanks Steve, the MDS is nice, improves my mileage sometimes to 18, but as soon as you give it gas, drops down to 10-12. I'm keeping the truck because of it's lifetime warranty, offered in 2009 only.
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Old 01-24-2013, 07:12 PM   #19
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Name: Logan
Trailer: 1976 Scamp 13'
Wisconsin
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Originally Posted by cpaharley2008 View Post
I normally get 12 mpg, towing or not. It is just a gas hog.
Trade it for a Cummins...

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Old 01-26-2013, 02:43 AM   #20
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Name: Jared
Trailer: 1984 19' scamp
Kansas
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I would look at the specs for the motor and check what peak torque is. try to not run the motor higher than peak torque for best milage. I think you should be getting better mileage than what your getting. Do you have over size tires? Any time your running over 55mph your going to suck gas expotentially. Push it harder the worse it gets. I do not run in tow mode I only use it when running up hill on any grade you wouldn't want to walk up. Do you have GPS? check your speedometer and odometer against it to verify your actual mileage. My girlfriends jeep liberty came from the factory with the meters reading 5 mph too high and the odometer off it made accurate caculations very hard.
Seems about right to me. I get about 11 towing the scamp 5'er at speed limit. I don't have the passion to slow down to 55-60 and see what it gets.
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