Originally Posted by Butter
Subjective...Maybe. But my buddies truck is a Quad cab with 34" tires on 20"s compared to my reg cab with 33" tires on 17's and he still gets better mpgs than me. With that being said the torque and speed are definitely noticeable between the two!
With equal driving styles, hand calculating I bet.
I have a friend who averages 25 mpg in a 2001 cummins if you ask him. If you do the math for him it's a lot different. By about 10mpg.
So yeah, subjective.
My cc averages 16 last i checked with mixed driving, some hard miles in there too. I'll bet you'll find qc and rc with 3.55 worse than that.
When I go on trips it's easily over 20.