Ram Heavy Duty Forum
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2021 2500 diesel getting low mpg while towing... ???
While towing my 8000 lbs trailer to San Diego from AZ, I was averaging 10-11 mpg at 65-70 mph. no real head wind to affect it, and the only modification done to the truck was slightly larger tires (285/65r20 instead of stock 285/60r20). this seems low as I use cruise control to hold a steady...