r/YamahaR9 • u/Xherdani • 11m ago
Vibration issue
Hi everyone, my R9 (~2,000 km) developed noticeable vibrations after a tire change.
They start around 5,000 RPM, mainly under acceleration/load, and almost disappear when I pull the clutch or close the throttle. The wheels have been balanced and the front wheel was carefully reinstalled.
I also adjusted the chain tension around the same time. It was initially quite tight. After loosening it, the vibration changed and shifted to a higher RPM range, but didn’t disappear.
Interestingly, the vibration gets stronger when hitting bumps/road dips and the rear suspension compresses, even at constant RPM/speed/throttle.
I mainly feel it through the footpegs, tank/frame and handlebars.
Any ideas? Could this still be related to chain tension/alignment or the rear wheel/drivetrain?