Is that true? I thought the E rating was an increased sidewall thickness...no change in rubber compound or lug thickness. It would make sense that they would be more puncture resistant and less likely to blowout, but does that decrease the tread wear?
I can say for sure my E load KO2s are lasting about twice as long, under identical driving / loading conditions, as the original C load range KO2s did. Why I am not sure, but it is for sure happening for my application.
I run similar inflation (36F / 33R) in these tires as the last (I think I ran 38F / 34R on the originals, I don't have my log here to check), but they seem much more puncture resistant and are lasting longer. I have already passed the mileage I got on the original tires, and the current tires are probably about 50% tread wear. The second half of tread wear seems to go faster, so I may not get quite double the life, but it will be close.
T!