My front Lazertech has over 23,000 on it and there is no shimmy. I can let go of the bars and glide down a twisty hill around all the corners without touching the bars until I need to stop or shift. The tread is nearly gone now, wouldn't go through inspection now if I ever did that.

I learned all I need to know about life by killing smart people and eating their brains.
Eat right ,Exercise ,Stay fit, Die Anyway!