Quote:
Originally Posted by mxsjw
I've got the same tires with a similar lift on my 5.7 DC and I still get 16 to 17 mpg on the highway in the summer.
|
Most of the economy is lost during acceleration, climbing hills, etc. Those big tires change the power/gearing tuning, which is optimized for the OEM tires. I'd expect similar mpg on the highway compared to a smaller tire with the same tread, but not around town.