garage sale GT said:How many miles do you get out of a chain?
It doesn't quite work like that. If I have a few months where I'm minded to do a much lower cadence, then the chain is worthless very quickly, even a brand new one. On the MTB if I get a sequence of muddy races, I'll have worn the whole drive train out over only, what, 5-800km in total. Also depends on the components, on my Cyclocross bike I can't even remember how many years ago the parts were replaced, well over 10, and obviously a company that made parts that long lasting is no longer in business.
On the commute I will generally swap the chains, I swap between a pair so if I get caught by the rain mid-week I can put another chain on that evening for the next day, and rewax them both over the weekend. When the drivetrain has had it's life, usually when there is no drive left in the cassette, I change the whole lot. That seems to be about once a year. So around 16000 km / 10000 miles.
Although this year the whole lot has lasted longer, which I put down to the weather people having a website where I can see the rainfall on my commute, (some sort of radar,) so can choose a time to set off to minimise getting wet, avoid going through the nature reserve before the rain has soaked away.