It's very confidence inspiring to hear of all these high mileages without engine trouble. I've had similar experiences with Honda STs. My old ST1100 went 150,000+ miles but suffered a burnt exhaust valve at 88K. Clearance was good, just one of those things. I fixed it and carried on. My current ST1300 has done 150,000+ with no engine mechanical issues at all, though it now suffers from an intractable misfire that's electrical in nature, so only gets ridden when I'm testing my latest theory to fix it. I was hoping the Hondas had not spoiled me for other bikes with respect to durability and reliability so it's heartening to expect similar service from my Super Tenere.