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KMC recommends changing your chain at 1% stretch. what do you guys make of this?
why is it so commonly recommended that you replace at .75 if not .5%
they also say:
>If you regularly checked your chain and the chain checker now starts to falls through, it indicates that your chain has worn beyond 75%.
>In principle, the chain can be used for another 25% of the distance already covered. (E.G. the mileage is 3000, and the chain checker starts to fall through, then replace WITHIN the next 1000 miles)
>We recommend you to replace the chain within this distance; this way, you stand a good chance of not having to change your cassette and chain wheels.
So its not like they aren't concerned with cassette wear
