Bike only has 5K km on it. Tires look n feel good. Vibration was immediate, and extremely high frequency. Almost unnoticeable at first except for numbness in my extremities after barely a few miles. Because of breaking in speed duration/rpm limits, I didn’t get a chance to take it up to higher gear/ higher speed variables on the open highway until weeks later. I found that the higher the speed, and higher the gear, the worst the vibration got. Very odd, I would have thought that a higher gear would have lowered rpm, thereby reducing the vibration. Indeed the frequency of the vibration lessened in 6th gear. But the shaking, and instability of the bike approaches a level of utter in tolerability. I will video the dynamometer test. But again....that won’t be until spring. Thx for your interest