Any guidelines as to when a pair of shoes is shot, or any tricks to determine that any crucial support is gone? I run 2 to 3 days per week (when it's warmer), only 3 to 6 miles at a time. I've had these shoes for a year, it feels like some of the support might be gone, the bottom tread is worn mostly flat at the balls of the foot, the rest is less worn. Thanks!
