are we supposed to replace the chain at 0.75% or 1% wear?
if we are supposed to replace the chain at 0.75%, why the chain wear indicator have both 0.75% and 1%?
Also, is it REALLY better to rotate between two two three different set of chains to make the cassette last longer? Is therer any fact in this theory?
if we are supposed to replace the chain at 0.75%, why the chain wear indicator have both 0.75% and 1%?
Also, is it REALLY better to rotate between two two three different set of chains to make the cassette last longer? Is therer any fact in this theory?