May be it's just a placebo effect:smile:
Over the weekend, I went to Sam's Club to get the tires balance and rotation at 1,500 miles cost only $15.xx after tax for one time. I've read that tires break - in time is around 1K - 2K miles so after I did it I feel quieter and smoother ride now. I'm not sure I need another re - balance next 5K miles or just a rotation. BTW, the Metris is not in theirs system yet that's why I didn't get the lifetime service for around $10 per tire.