Could not believe, but the guy's reliable (and says he's now got a new chain / sprockets to install). 60,000 miles on this chain. Looks looser than a goose even after taking up all the available tightening distance. No, don't know how, maybe later ... If the rider wants to own up, it's up to him. For me, hat's off for keeping it together. So how many miles have others (you) had a chain last ?? .