mmmmm i know for sure that a big bike will get a steering wobble if it has a big box on the back especially with alot of weight in it as they make the front end light and this causes it to wobble.have you got the right tyre pressure in the front tyre if its over-inflated this will not help it either.but yes do check the wheel bearings put the biek on the centre stand get someone to sit on the pillion seat and then go to the front of the bike tunr the sterring over one way and hold the bottom of the tyre and try to pull it to and fro.also spin the wheel and listen for a rough noise when it turns if its really bad it will vibrate through the forks.
adam bike doctor, May 2010
