One thing here Pete. You are driving around in a one to one final gear.. So your milage is not hurt as much when installing a slightly taller tire.
BUT the newer trannys with the overdrive gear start lugging when a taller tire is installed.. so milage is affected more in the newer Jeeps than the older ones.
Big JIm <img src="/forums/images/graemlins/pfft.gif" alt="" />

professional bovine relocation specialist