Livin in the flatlands.
Join Date: Aug 2010
Location: Fishing country, ND
Re: fuel economy after tire change
You have 3.73's for gears.
I have the same year pickup and changed from 265 to 285. Hand calculated my mileage has not changed at all, so with the slight increase in tire size causing odometer inaccuracy, I figured I'm getting slightly better mileage.
'01 F250 CCSB
6637 Intake, 38R, 4" MBRP TB w/muffler
Tunes by SWAMPS
Goodyear DuraTrac 285/75 R16
ND Command Supply Services branch officer