Just replaced my original tires at 355 hours. Might still look new for Vlad, but after a couple of rotations, it was time. Both are Aero Classic 5.00-5s from Van's.
The used tire, is actually a little bigger than the new one when its placed side by side. Clearly the used one has less rubber, but I guess being under pressure for three years or so, weaken's them and they permanently stretch out some? Anyhow, might not be news, but something I hadn't seen before.