I test rode the K12RS back in 2002 due to being [email protected]
off with my R11GS reliability and having fond memories of a first-year K100RS , which I bought on a BMW employee discount.
I didn't find vibration an issues (my Concours 1000 i also had at the time was way worse). But even though it had a full service record at a reputable dealer, at 18K miles the suspension was horrible, and one or two issues with instruments. That played into my BMW-reliability/cost phobia, so I passed on the deal. A pity, as I loved the way the bike rode, felt like coming home to a better, faster, sexier K100RS which I really loved at the time I had it.
I still have minor bouts of lust for a decent K11RS / 12RS.
With most things on a 90s+ BMW, you need to keep a good $$$ reserve in your bank account. Even if reliable, when things go wrong, they cost a lot.
If you are not looking for a badge (unlikely given the BMW / Ducati background), you can get pretty much the same mix of utility out of a Kawasaki ZZR1200, and likely much cheaper running costs. Other really nice bikes of the era include the Honda Blackbird (CBR1100XX).
Instead of the RS, I sold the GS and went to a ZX12R, which I set up for sport touring (bars, screen, soft luggage, heated grips and electric outlets), which was rock-solid reliable, and much lighter and faster (and better handling). Did a 13 day eastern CA tour on that bike, covering central Quebec, St Lawrence north shore, Gaspe peninsula, New Brunswick, PEI, Nova Scotia, Newfoundland, Maine and NH, over 4000 miles and lots of ferries, including 2 overnighters, and was perfectly comfortable.
I tested the ZX back-to-back against the K12S a few years later, and it was still better handling, noticeably quicker and lighter handling.
Apologies for the political incorrectness of posting this