I am so torn but don't feel I can make a wrong decision. Price is the same. Coopers are E-rated only which may hurt my mileage more but gas is paid by work. I am 90% highway, the rest are rock/gravel/muddy ranch roads in Texas (no crazy mountain rocks like you guys that off-road all the time). Being that I don't pull anything and drive a 4Runner, would I, in theory, get more miles out of properly rotated E tires vs D? Share thoughts, opinions, experiences.