In short, What potential problems could/would/should I expect on a '17, 800GS that wouldn't be covered by BMW warranty? All maintenance has been done by BMW mechanic, with records, and is in perfect working order. Is BMW a good warranty? Or do they use any excuse to try to get out of a repair? I don't really know anything about BMW, so any major Pro/Cons, feel free to point them out too. Sorry to do things like this. I'm sure it's already been answered, and I'll continue searching after I post. I just have a very limited time window to make an offer on a friend's lightly used '17 800GS. For years, I always dismissed BMWs due to repair costs, but it's looking like I will get a deal that is too good to pass up, so I'm here looking for a quick BMW education! Thanks!