I have run each chain for 2,500-3,000kms first then rotated them off. Later replaced for a further 4,000kms and then binned when measured at twelve and one eighth inches. I may have been better to have rotated them earlier at 1,000kms first, but as the chainring and sprocket are still running fine it's probably a matter of six or half a dozen. The third chain on it's second rotation should take me to ~23,000kms for the three. Then I will replace the whole drivetrain (already in storage).
