Big tires, odometer error, and mpg

Recently a friend emailed this miles-per-gallon question: I’m scratching my head here on fuel and mileage numbers. If I do the math for gallons of fuel consumed (fuel filter life % gauge) and odo I get about 16 mpg. But the Ram’s EVIC dash display says 11 MPG. With 4.30:1 gears and 37-inch tires, I know ALL the numbers are inaccurate. How … Read More