Well, I've been pretty light on the gas as well. I try not to ever go past 2000 RPM, and when accelerating, I try not to go past 1500. A couple of times entering the freeway, I've pushed it to 3000RPM, but only for a short burst. I just filled up second tank at 325 miles. So like I said, hopefully once the engine breaks in, I'll get at least 14MPG.

Btw, how much off do you think the speedometer would be off from getting bigger wheels/tires? I went from 18" stock to 20" 275/50/20.

 

What was the stock size tire that came on the truck? You can check out http://www.4lo.com/ to see if any of their calculators help. Once you give us all of those dimenions, we can figure out how much you are probably off by.


Rich

 

Rich,

Stocks were 265-60-18, the new ones are 275-60-20. Using that site, I'm about 1.9 miles off. Thanks for the info.

So if I'm going 66.9 instead of 65, I would think my gas mileage should be better than 11.7mpg.

I was too eager to get new wheels, I should've drove the stocks for awhile to get gas mileage data.