Toyo A/T's...285-75x16's...load range E.
59K at last rotation 2 weeks ago. Tire guy from whom I bought 'em was amazed. Looks like they've got at least another 30K left, comfortably.
I rotate 'em without fail every 7 or 8K.
Michelin AT's on past 3 Suburbans could go comfortably to 90K or so, with regular rotation.
SWU, tire shop manager said the same thing relative to a "D" load range. "E's" were actually a tiny bit cheaper, probably due to volume. I've not had a "D" on my LX, but felt no difference loaded or unloaded on a Suburban.Steve from my experience I think a big factor is the LT rating "E" rating, that gets the 60-90k miles.