I know I don't ride as much as some, but I'm well over 3000 miles now on my RT and have yet to notice ANY vibration that I was certain was related to the Spyder and not the road.
It's easy to worry yourself sick over stuff you read in this forum. I myself worried over the possibility of getting a rock stuck in the belt until I ran into problems installing the rock guard and then I did some independent research and found that there is no such issue with Harleys that have the exact same setup, and you know how many Harleys there are. And yes, some Spyders have gotten rocks in the belt but seriously folks, out of the tens of thousands of Spyders on the road, how many? It's almost certainly a tiny percentage, and I suspect it may be very similar with the vibration. It may be real, but how many does it actually affect? At what point is the cure worse than the disease? I wonder how many people have unrealistic expectations about vibration based on what they read in this forum. It's not a car, it's a three-wheeled motorcycle. You have a connection with the road that you don't have in your S-class Mercedes. Some vibrations are to be expected.
It does seem like those who ride a LOT notice things a lot more than I do. For example, I really can't imagine how much better my Spyder would be with one of these anti-vibration doohickeys any more than I'd notice any better handling with a roll bar or ____ brand of tires. I'm not saying anybody is wrong, I'm saying that some of you are such experts that you notice things where others of us would never know the difference. But
noobs like me can read this stuff and worry ourselves sick.
Someday I may develop a greater sensitivity to this. Until then, I plan to trust BRP's engineers on the theory that my RT ain't broke so why fix it? In the meantime at least I don't have to worry about my anti-vibration doohickey going bad on me.