91 samurai, 150K miles, 225/75 tires, stock otherwise......27-28 MPG average. I have gotten 31-32 out of it, when I first put in my low mileage 85K motor in, but since then it runs pretty consistent at 27-28.
92 sidekick, 4 door, 175K miles, 16V, manual, 225/75 tires, K&N air filter, header....27-28 average.
95 sidekick, 4 door, 135K miles, 16V, manual 215/75 tires, stock otherwise.....28-32.....with 30-32 being pretty common when running 65-70 on the interstate.
All MPG figures are adjusted for the "non-stock" tire sizes.