Have put a couple hundred miles on these 275/65/R20 Michelin Defenders, load range D. A couple observations:
-marginal gas mileage decrease, from 22 highway to 20.5, probably more calculation adjustment than actual loss.
-transmission shifting issue from 2nd to 1st "thunk" is pretty much gone. Can feel it shifting slightly more prominently in that scenario, but it is 95% improved. Transmission gating feels ideal, vehicle feels more "planted" and stable, though it felt that way to start with.
Very, very happy with this size and tire.