If you are an experienced rider, I would think you could tell the difference between engine vibration and bad bearings or an unbalanced wheel. I think I could. My 04 was smoother at 4,000 rpms than my next 08. When I bought my 12, I could immediately tell it was smoother at 4,000 rpm than the 08. All three FJR's started the vibes right around the 4,000 rpm mark. My 12's transmission is even a little slicker and easier to put in first gear and shift that the first two FJR's. I think the vibrations can vary over different years and even in the same year model. That has been my experience and observation over the years reading similar threads like this.
GP