My wife's 2009 MP3 400 has had vibration at 60-65 MPH and up since the dealer changed the front tires two years ago. All the tires have been balanced twice, but the vibration is still there.
These tires are ones used by the dealer for their regular scooters. The name on the sidewall is "MMG Tires" and they are made in China. I've never seen these before and think that they might not be suitable on an MP3.
Before we buy new brand name tires, is there anything that needs to be checked that might be causing this problem?
If not, what would be good replacements?
Any help would be appreciated.