My 90' gets 15.5 (16.5 if you add in speedo error)MPG. granted that is a good mix of highway and city. It is also turning 31's MTRs load range E, they weigh as much as my 33's did. Both of my 88's I had did about the same, both had 31's, all had high miles. One with over 230k, one with 190k and the 90' with 205k.