...chains (on an SLX cassette):
M6100: 150 km
M8100: 500 km
XX1: 3700 km
Translated to €/km including wax cost:
M6100: €0,069
M8100: €0,059
XX1: €0,019
*mind € will keep dropping until wear limits are reached, however, this is where I'm at now.
Bosch CX, mainly turbo / eMTB+ mode, all weather.