So you have a K1300S? Can you give me more detailed impressions of it? Maintenance schedule, maintenance costs, reliability, reach to bars compared to the FJR? Do you have the ESA? I'm very interested in them, and plan to finally sit on one/test ride one in the next month or two.
I was surprised at how well I have taken to the K1300S. I had owned a K1200Rsport for 2.5 years previous to acquiring the K1300S, and I did not expect it to be much different. Power delivery and smoothness are very similar. The K1300S improved a whole lot of small subtle things that I did not even realize were issues because I was very happy with the K1200... The cockpit ergonomics represent an improvement to me. The seat represents an improvement. My K1200 was a basic model, and I went with the premium version of the K1300, including ESA.
I had ESA on my 09 R1200GS, and so I was familiar with it. Before I got it in the R1200GS, I considered it to be a gimmick. After having it on the R1200GS, and now again having it on the K1300S, my opinion of it is that it is one more nicety that is a nice touch. My old strategy for dealing with suspension issues was to advance pre-load into the high load range, and then add damping, also into the high range. I usually did some minor adjusting after these initial adjustments, and then rarely touched the suspension again during the life of the bike. ESA has settings for comfort, normal, and sport (soft, normal, stiff, with damping), but then within each category, it also has settings for one rider, one rider and luggage, two riders, two riders with luggage. If you can't find a good setting for your circumstance, it would surprise me. It is not adjustable on the fly. You have to stop to do the adjustment, but it is a push button affair, and so it is easy to take care of it once stopped. There is a noticeable difference between settings. I have settled into the single rider sport position because it seems to me to be the most fun on our twisty roads up and down the Cumberland Plateau. On a longer ride on I-40, I would set it on comfort instead of sport. On my R1200GS, the comfort setting really did reduce my fatigue on longer rides where the goal was racking up miles. Obviously with a manually adjustable suspension you can also make adjustments when you stop to suit your circumstances. ESA just makes it easy, and also gives you a wide range of choices that are repeatable from day to day without keeping a notebook.
Maintenance schedule is simple. 600 mile check. Then 6000 mile or 12 month intervals. I had the FJR serviced at Sloan's in Murfreesboro, TN regularly (owned it for 2 years). I had the K1200Rsport serviced at BMW Triumph Ducati of Daytona Beach (owned it for two and a half years, overlapping the FJR on both ends). Bills were similar. I had my FJR on a 4000 mile service interval. Both dealerships were professional and competent. Both took care of recalls, warranty work, etc. I had some issues with both bikes ... both had ignition switch issues for example, both got remaps. I think the FJR actually had a new ECU on recall. The BMW had a fuel strip, air box, and mirrors. The BMW warranty 3 years or 36,000 miles with 24/7 roadside assistance. This works better for me than the typical Japanese warranty of 1 year unlimited mileage, but I know that the unlimited mileage with the addition of the YES plan from Yamaha is a nice option too. Extended warranties are available for BMWs too, but if you trade bikes as often as I do, you'll never need to buy one.
Reliability? I dunno... all of my modern bikes have been reliable. If you follow the maintenance schedules, and ride each bike several times a month, they all seem to do quite well. The only modern bike I've owned that gave me the heebee jeebees over reliability was my Moto Guzzi Norge. Moto Guzzi was not yet ready for prime time, and I think this is still true. Stuff was falling off that bike and there were issues with engine control, heated grips, windshield, etc. from day one.
If my K1200Rsport had stranded me due to an EWS failure (ignition switch antennae ring) I would have been as angry about it as if my FJR had stranded me due to mechanical failure of its ignition switch. Both were hotly reported on their respective forums, but I was not a victim of either, and had both fixed at my leisure during normally scheduled service appointments. I expect good reliability from the K1300S, and general reports from other riders are positive, but like any marque or bike, there are people who have negative experiences.
Reach to bars and other cockpit ergonomics? Very very different compared to the FJR. The BMW geometry works better for me, all the way to my satisfaction with the stock seat. This has been sort of odd, because I've been wrestling with seat issues on a lot of bikes since I got ride of my ST1100 and my V-Strom 1000. My two most recent acquisitions (the K1300S and the Triumph Rocket III Touring) are both sporting stock seats, and I am very happy on either of them.
The FJR has much better on board storage. If you can get comfortable with the bike, the FJR will handle a pillion more comfortably. The K1300S is significantly lighter, and significantly more adrenaline producing, and in my opinion, considerably safer when pushing the bike to its limits, with its traction control and significantly lighter weight. My opinion, and your mileage may vary, is that the K1300S is considerably more nimble and flickable.
These two are really different kinds of bikes, the FJR being more akin to the K1300GT than the K1300S. I had planned to get a K1200GT when I bought the FJR, but I was having some issues with my left foot at the time, and Yamaha's AE feature was the clincher that sold me on the FJR.
Since that time my need for the AE has gone away. I liked the feature. Very nice to avoid clutching all the time in traffic. Very nice to give the left foot a rest when it was having trouble. BMW has nothing similar. I have the Gear Shift Assistant on the K1300S, but it is focused on clutchless drag racing upshifts and does nothing to facilitate regular shifting.
I hope you enjoy your test ride.