Lozzo

So so many bikes do this.

I don't know what it is but there have been bikes from all manufacturers that give a little wiggle at 50mph when you take your hands off the bars. balancng doesn't cure it, only a change of tyre type will.

My solution is simple...don't take your hands off the bars at 50. If you're happy with the way the tyres perform at every other speed and condition, then leave hands on the bars at 50 and you'll not worry about it. The wobble never gets dangerous, it's just something it does.