I recently bought a Yamaha FZ25, used. It is generally in great nick, having only run 13k kms in 5 years. The tyres were shot from sitting too long, so I got some new ones.
It’s been great, but I have noticed significant vibration from the rear all the way to the brake pedal, only when I have a pillion on board. The new tyres are pretty knobby, but I don’t feel any vibration riding solo. Could this be a wheel bearing issue?
They did not, but yes - as you said, if it was the balance, it would’ve vibrated even with no pillion