Thought that i would share that After switching from factory 20" rims on pirelli scorpions (appx 32" D) to 35" BFG MT's on 17" rims I have seen a noticable mpg improvement electronically.

I know that the odometer will be off... but the number it is giving me should still be an underestimation to what I am getting.

I will keep everyone updated as I continue to drive on them more, but I was cirtainly not expecting to gain ANY mileage even by decreasing rim diameter by 3"

 

HUMM, curious what the overal weight difference between the two sets are? Keep us posted....

 

oh god... do they ever HUMMMMM on the pavement. best to keep that music turned up!