Don't know if any of you Bolters have road racing experience, but shaving tires to make them round is common practice in road racing.
I'm not sure about the U.S. but here in Germany all of the racers have such machines and those with tire sponsors get it done for them by the tire manufacturers.
Maybe it's the same in the U.S.A. ??
Can tell you from my own experience that making them round greatly reduces vibration & harshness and also extends the tire life.
Must admit watching them do it to new tires is kind of scary. Removing 1/4" or more is common on extra wide tires.
