Originally Posted by
dedwards0323
So are you stating that changing the tire size actually improves or reduces MPG? Or are you just referencing that the resulting
calculated MPG is better or worse but not really the
actual MPG? Can't see how changing the tire size has a definitive impact on
actual MPG. Curious?
Yes,, and as speedy said weight has a factor in it also you want to see your mileage go way up ( 2 to 4 mpg) on the front put two MB spare tires 18" but tall and narrow and on the rear put narrow rims and a 275/50-16= 27" tall, 8.6 wide, on the rear,,, the taller the tire the better the mpg ,and the slower the rpm,, it is like changing you gear ratio just a very small amount. jim