I have a Yamaha XJ600N, and at various points of time when riding around in the city at 50 to 60 kph I have had this strange feedback from the wheels or suspension that makes me feel either slightly imbalanced or dragged around the lane. It always happens when I am riding alone (ie. no pillion) on roads that don't have a perfectly flat surface - such as city roads that have an undulation in the middle of the lane. I have never felt it on well-laid highways.
I first noticed it a few days after buying the motorcycle, but it came with very old tyres, so I assumed that it has either got to do with that or that I was being too touchy as a newbie rider. I put on fresh new tyres and now, one year later, I am again experiencing this once in a while.
Is something wrong with the motorcycle? Could this be somehow related to my suspension being too soft?