I put a ATT on my two up bike 17k miles ago.
When new, the middle grove mic'd out at .31 " or 7.98 mm.
Today, it mic'd out at .179" or 4.55 mm.
Still got more than half the tread left.
Mostly two up at 32-36 psi depending which gauge you want to believe.

Hey Bill, that tire is looking pretty good.

I've never seen a bad report about the ATT. I've been running dark side for quite a while but have been hesitant about them because of the height. Have you had any problems with bottoming on the fender ?
Morning Rob,
When I put that tire on, I bought a set of used progressive shocks (either 11.5 or 12", can't remember which) to lower the bike from the high tire.
Any ways, when 2 up, the tire would rub, I believe, on the wire cage.
I re-installed the OEM shocks and the rub went away.
I've gotten use to the extra height. Never bothered me when riding and I have a 32" inseam, so my feet set flat. It was the extra height when on the stand that was the only concern.
I've got m/c tires on my other rides and I really like the ATT. Can't beat the mileage it's giving me.
Just wish it came with a lower profile.