K12S, 160,000 miles on a friends. My K13S has 132,000 miles. Still a very fast bike, barks when it starts up. I've kept up on worn parts replacement and the bike is ready to go on a multi thousand mile trip any time.
Not the highest on here, but the highest mileage bike I've owned to date. My recently acquired K1300GT 2009 model with 94500km on the odo. Currently at a shade over 95k, now stripped down getting new shocks and a number of other parts before going back together and prepping for a long trip.
There is of course this famous YouTube video from Italy. In it they report to completely tear down a 2008 K12S engine with 316,000 KM on it. Yes that's 196,000 + miles!!! Their goal is to do some maintenance and inspection and try and get the engine to 500,000 KM. The video does appear to be legit, which makes one question all the hysteria around K12S engines failing.
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