Picture of my bike after the izumi chain snapped. 10000 miles later. The bike is at 47k. The orginal izumi chain was fitted around 37k. Even with a scott oiler the chain gave up. I did notice that the slack on the tight spot and loose spot was increasing. This should have made me think of changing the chain before this happened.
As always after it is easier to say. Now I have a did 525 vx chain and new sprockets fitted. What make do you use?