I was thinking about the same question, besides the added bling (and the higher profits for BMW) what's the point of a hardened surface chain?
No - I use Motul chain cleaner or similar. I usually switch to Renthal sprockets and wind up changing chain and sprockets over the winter anyway.Do you clean your chain with WD40? That stuff will kill the Orings pretty quick.
Currently the 2020 does not have active GPS lap timing. The rumor is the new 2D datalogger what was supposed to release July 2020 ( and did not ) is going to tie into the bikes connections and provide real time GPS lap timing. There are so many other things it can do I hope that is built into it also. The RCK3 on 15 - 19 K46 with a GPS timer from PZRacing allowed 30 sectors to setup DDC suspension changes. It was alot of work to setup, but it really made a difference at one track I implemented the sectioning DDC.Do the 2020 RR's have GPS in them. This says "activate GPS to trigger laps". If it's not in the 2020 bikes, any guesses on if it could be added and how much. I'm debating buying an aftermarket lap timer, but if it's simply activating it, it should be less expensive to do this.
Literally just saw this before reading your post:DLC coating provides less friction. Less friction more power on the wheel...