[mcrews]

Originally Posted by BackroadBomber

I got slightly. Bigger tires on my ford ranger and I see a decent mpg increase, like 2 mpg. Also, the reason people think they get worse mileage is because people don't re-calibrate theirs speedo and odometer. A bigger tire will make your speedo read slower, so your odometer will show less miles than actual miles driven. If you put bigger tires on, make sure you get your speedo recalibrated, or if your trucks older like mine figure out the percentage it's off and factor that In to figure out your true mileage. Oh by the way the tires that are supposed to be on my truck are 225-70-14 and I put on 225-75-15 so they're around 2 inches taller and they throw my speedometer off by 7.11% (when I'm doing 60 my speedo will read 56). So whenever I fill up and want to figure out my mileage, I multiply the distance on the odo by 1.0711 and find out my actual miles travelled.

exactly!