JPR, 2013 shadow phantom, had the tires replaced around 5500 miles, now I've got 6500. After the tires were done I felt a resonance that would present from 20 to 30 mph, and 50 to 60. I took it back to the installer and he just dismissed me, said he felt it with the tire off the ground just spinning it by hand but that was that.
This past week I checked the oil in the final drive, had a little sparkles in it but no big chunks that sunk to the bottom, I decided to change it, put some Mobil synthetic in it, did fifteen miles, no real change, figured maybe it just needed more time.
A day later I hop on the interstate to travel seventy miles away, and by the time i get to the interstate, the vibration has gotten way worse, whole bike is shaking but I have to get where I'm going, just hoping it doesn't fall apart. I make it and make it seventy miles back home. I drained the oil and as far as I can tell the gear on the wheel looks good and I see no metal at all in the oil.
Ideas are much appreciated, I'm at wits end, I'll take it somewhere if I need to but I'd rather not.
Thanks.