Difference between 4.30 & 3.55 gears
My 2011 F-350 has a 3.55 geared rear end. The new 2017 F-450 only comes with a 4.30 geared rear end. Basically the same engine (6.7 turbo diesel). Does that mean better or worse fuel consumption...
Forum Discussion
Most of the factory stock tire sizes for American 3/4-ton and 1-ton pickups are within about 2 inches diameter of each other, regardless of the factory wheel size.
225/70-19.5's are ~32" diameter
245/70-19.5's are ~33" diameter
215/85-16's are ~30.5" diameter
235/85-16's are ~31.5" diameter
245/75-16's are ~30.5" diameter
265/75-16's are ~31.5" diameter
285/75-16's are ~33" diameter
225/80-17's are ~31" diameter
235/80-17's are ~31.5" diameter
245/70-17's are ~30.5" diameter
265/70-17's are ~31.5" diameter
265/65-18's are ~31.5" diameter
275/65-18's are ~32" diameter
285/65-18's are ~32.5" diameter
I don't know offhand the tire sizes for 20" wheels, or I would post those too.
225/70-19.5's are ~32" diameter
245/70-19.5's are ~33" diameter
215/85-16's are ~30.5" diameter
235/85-16's are ~31.5" diameter
245/75-16's are ~30.5" diameter
265/75-16's are ~31.5" diameter
285/75-16's are ~33" diameter
225/80-17's are ~31" diameter
235/80-17's are ~31.5" diameter
245/70-17's are ~30.5" diameter
265/70-17's are ~31.5" diameter
265/65-18's are ~31.5" diameter
275/65-18's are ~32" diameter
285/65-18's are ~32.5" diameter
I don't know offhand the tire sizes for 20" wheels, or I would post those too.
