My last chain on my CB 1100 went 36,909 miles. The one on the FZ-1 before it went 35,000 miles and I'm not easy on them (spelled not adjusted, cleaned or lubed as often as the manual says). Figuring the average rider rides less than 5000 miles a year that's 7 or 8 years and it seems the majority of owners don't keep a bike that long. So BMW's chain will "probably" last the life of the original owners time with their bike.
2018 Yamaha FJR 1300A
2014 Honda CB1100 DLX
It doesn't matter what I ride, where I ride, how fast I ride, or how far I ride... it only matters THAT I RIDE...EVERY DAY. "Ferret"