They had to have changed something or you got a defective tire. My Metz is still great as far as the ride goes and rock solid. No shimmy at any time and can let go of the handle bars and go down hill around corners until I run out of speed and need to give it some gas.Never had any braking issue at all.

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