Since 1997, having only ridden BMW (K1100RS, K1200RS, K1200S, K1300S, then back to K1200S), I was skeptical that the SS would be as balanced as a SPORT tourer. Took a 3 day, 1400 mile run into the Blue Ridge mountains over Father's Day weekend. About 2 hours of slab on either end, the rest on some great sweepers and twisties, including the Devil's Backbone, Tail of the Dragon, Cherohala Skyway, and numerous other roads where the NC, TN, GA and SC borders intersect in the mountains.
On the way up, I missed the KS, but not as much as I thought I might. The extra 100 lbs., as well as incredible power available in any gear, is a benefit on the slab.
But once you start leaning, the SS made me ALMOST forget the KS. If you haven't ridden a KS, I would say it comes as close to perfect for those that like to ride aggressively, but don't want a full-on crotch rocket.
Love the flick-ability, torque, and balance of the SS, especially on downhill technical roads. Love the styling and ergos, but distance between my crotch and the tank could use another inch or two. (5'10", 178 lbs. with a 32" inseam). Otherwise, the seat was surprisingly comfortable.
After the first day, I made the decision to sell my K1200S as soon as I got back home, as the pros of the SS over the KS outweighed the cons. To be honest, if BMW hadn't discontinued the KS and not announced a replacement, I wouldn't have found my way to the SS. Now I believe the SS could be that perfect SPORT tourer for one-up road strafing, particularly when you have to slab a good ways to get there.
I will let others debate what refinements need to be made, if any, but for me, other than more crotch room, mirror stalks somehow attached to the frame under the fairing, and possibly a few more ponies, she is perfect.
Just turned 59 and love to see the guys older than me on the SS. I hope I will be one as well, as the thought of a full-on touring bike just isn't appealing.