This is my first season on 10 speed and after measuring today it looks like I'm due for my first chain replacement. The bike is a Norco Range with a KMC X10 chain, about 6 months old.
I'm used to getting a year or more out of my 9 speed chains on my freeride/all-mountain bike (usually a Sram 950 or 970).
Not sure if 10 speed just wears out quicker or if going with a Sram (or Shimano) replacement will last longer.
Any thoughts?