Originally Posted by Iride01

If you hit that 0.5% more point in 2000 miles, I have to ask if you run often in gear combos that keep the chain at a angle between the front and back. Or you pedal with high power at a low cadence too much.

I did wear out my first 11 speed chain in about 5000 miles. And it was over the 0.5% mark before I realized it. I dd very often climb the short hills here in the big ring and lowest rear sprocket. And that kept a lot of angle on the chain. Which I can't help but think must worn it faster.

On my current bike with Di2, I have it set up so that the chain won't go to the extreme two low sprockets on the rear when in the big ring. And I currently have 8000 miles on it. And it's still has not reached 0.5%

I use to ridicule the anti-cross chainers. They seemed to be a cult forecasting doom and gloom to any that ran their chains in the big big combos. They made it seem like the bike's drive train would blow up. But now I think they might have been on to something. They just didn't know how to express it other than say don't do it.