Kb,,,yes the vibration start at 90 mph and normal and not a big problem for me like i already said.....
Big Red,,,,i am glad too that the new tires make a differrence,,,,,the only thing i am dissapointed is the fact that i purchased a not too old bike and still have problem to resolve,,,oufff we will succeed!!!
I have order an EK x-ring chain with a tensile of 10500 with two solid sprokets,,,,probably not the lightest but something which should run smootly for long time,,,i hope,,,,,,can't wait to see the differrence,,,i will let you know for sure....
By the way, i started another tread about setting the suspension,,,if you can check quickly....
Thanks