>>1360721This is an extreme example of it.
You can generally tell by comparing one chainring with the other, as they wear at different rates. Bear in mind though, that some individual teeth may be profiled differently to aid shifting, and not to mistake that for wear.
And it's not that you can't replace them either, just that when the chainrings are worn, you want to replace the cassette and chain as well. And sometimes chainrings can be hard to find.
Good luck anon. That bike is really high quality. It will come up nicely with some TLC. You can get a shorter stem for it if you're stretched out and the aerobars will come off.
