Looking for some advice on a vibration in the front end of my 1999 zx-9. When reaching speeds around 130-150 and above there is an increasingly strong vibration. Any ideas on what it could be going on or what needs to be replaced? Should also note that I have noticed that there is a very small flat spot in the front rim so my first thought would be to replace the rim but would like to know what else could be wrong. Any help would greatly be appreciated.
