Aqcon:
I am fairly new to this Forum, though I have lurked here for a while, and I stumbled in tonight to find your query about buying a used, high mileage Super Tenere. I'm late to the show and realize that you have already purchased the bike however I just wanted to chime in to let you know that you have purchased a GREAT bike and have nothing to worry about.
I have a 2013 Super Tenere and I'm guessing that this would be a "Gen1" machine. I have owned the bike since new and it currently has almost 178,000km (110,604 miles) on the odometer. It would have even more kilometers on it however last year I bought a second bike, on which I put 20,400km, so I only put about 14,000km on the Super Tenere last year. I have completed 3 Iron Butt rides with it and it is no stranger to gravel roads and some mud.
Summarizing a few details of my bike for you: original brake rotors, FD has leaked three times requiring rebuilds, regular valve checks have always found one or two exhaust valves to be tight, rear shock leaked (not rebuildable) and was replaced with an OEM shock, 16 rear and 10 front tires (original Metzlers, 2 sets of Mitas E07, and the rest were Heidenau K60's, Yamalube 10W40 and Yamaha filters and the motor does not burn oil, spoke failure in the rear wheel - make sure you check them every so often and re-torque them (6Nm), Jesse Bags 10" saddlebags (didn't buy the OEM bags as they looked pretty flimsy), AltRider rear luggage bracket, AltRider crash bars, AltRider stump pan, Fenda Extenda on the front fender.
I have added several other bits and pieces but I don't want to bore you, however one add-on I highly recommend are the Yamaha winglets that attach to the fairing on either side of the windshield. They are well worth the outrageous Yamaha asking price.
You have purchased a fine motorcycle. Enjoy.
Haynes