17 RGU silky smooth at any speed. Has a bit of a thump at idle. The 2018 114 Fat boy I took out for a demo ride yesterday had noticeable vibration at 60+ mph. Couldn’t see clearly out the mirrors at that speed. Smooth at stop lights.
My M-8 vibrates above 70 mph I was thinking it was a tire balance issue but am goin to take it in and have it checked. Started around 2500 miles I checked and could see no wheel weights misssing