Wow reading all of this on the vibration, not sure if I feel better or worse now about my 2016 R3. One thing I love about the bike is its pull. Went on short trip last night, all was fine and then I feel a vibration in my seat and throughout bike. This was halfway through the trip so something happened right then. Stop to inspect & determined it was an internal engine issue. I have reved my bike sitting stills many times (Not hard) and I did that last night and it vibrated a lot and could feel it in the seat mostly. Heck I only have 1,300 miles on it. So I canceled the trip and turned around, did not want to be stuck on the road somewhere.
So now I am reading many possibilities; I know it is not the tires, it happens sitting still. Engine sounds solid at an idle, not a fuel or spark issue. Just feels like a weight came off something that helped in higher speeds. I would be surprised if it was the clutch, this was not gradual, it was good one mile marker and bad the next.
Bought it in Jan of this year from Florida, live in IL. I am sure the triumph dealer here will be reluctant to do warranty work even if it is a warranty issue, not sure how to find that out. Well, I just put dressers bars (front and back) windshield, viking saddlebags, backrest, cruise control and LED lighting. Now I am thinking of getting rid of it, it has lost its amazing pull.