I recently purchased a 2018 Sinnis Shuttle 125 EFI, I'm happy with it but, it has a vibrating sound and feeling that occurs randomly at first but over 40mph it's intermittent and regular but gets faster with speed. I can't see anything touching the wheels. Does anyone know what this could possibly be?
I've just noticed after feeling around for anything loose around the wheels that there is slight movement of the rear caliper, is that supposed to move?
