- Mar 2, 2012
- Reaction score
now I need to find an accurate chart to know whats what.
burb has 3.73 and 30" tires. I know they are 3.9% larger/faster than stock.
Sierra has 3.43 and 28" tires...
I thought these set ups had me just slightly in the fuel economy side but now I have no idea.
Those are good all-around ratios for daily drivers. My truck originally had 3.42s with 32" tires, and 4x4, which adds rolling resistance as well as air resistance since the 4x4 rides a few inches taller than a 2wd. Even then it was fine 99% of the time just driving around.
What mpg are you getting from the pickup? if it's 15+ I'd say that's pretty good for these trucks.