Quote Originally Posted by Triskeliongirl
Regarding how frequently to change the chain. Do you change it every 1500-2000 miles regardless of stretch, or do you measure it with one of those stretch rulers, and change it when it enters the high end of the acceptable range?
That's really a personal decision. Some people will use a chain until it starts to skip over the cassette cogs, but you are more likely to need to replace cogs also that way. If you plan to swap these two wheels, better to be more conservative and change the chain early.