We have a 2010 Edge Limited with upgraded (18-inch) wheels and tires. I wonder what, if any, effect this upgrade has on the odometer and MPG calculator readings.
The reason for asking is the manual calculation of MPG (miles driven per the odometer divided by fuel used at the pump is always less than the generous MPG displayed. Yes, both were reset at fill up
The Edge does not even come close to the MPG on the EPA sheet Ford used to sell the vehicle. It said 25 MPG highway and 18 City. We get 20 Highway and at best 16 in city.
Could the wheel/tire upgrade effect the numbers?