If the tire is bigger than a smaller tire, then the actual complete rotations of the wheel would be less on a larger tire.... therefore less complete rotations on the axle. The mileage is the same but the rotations are less on a larger tire. It may be 100,000 miles on the crossfire but feel like only 90,000 when compared to a car with smaller tires.

Not sure exactly what this guy is trying to say but this is what I was thinking as I was reading his post. Maybe I am nuts!!! This guy is actually thinking on a whole different level. Don't think of the miles (a mile is a mile).... think about complete rotations on the axle. Larger tires equal less COMPLETE rotations on the axle.