Originally Posted by bflank
Just remember that while you use the tires for DD, you pay the penalty in MPG for the higher weight that comes with the heavier sidewalls. Everything is a tradeoff. TANSTAAFL (There Ain't No Such Thing As A Free Lunch).
Yep, We took two 2012 JKU wranglers on a 5000 mile trip two weeks ago, mine with 34" KM2's would require 18 gallons at fillup, the other a stock JKU sport with SR-As took 15 gallons. Over and over.
We were probably travelling at 75-80 (the speed limit is 75 on many western interstates) that killed the mpg overall. Of course the trails killed the SR-As (one destroyed, 2 with repairable punctures), so it probably all evened out. LOL