Originally Posted by Jim Moore
It's pretty rare tha you find a tire so out of round that you can feel the difference. I rate balancing as nice-to have but not critical on a GS. On a track bike I would balance them.
Balance has nothing to do with tire shape. It evens out the weight distribution of the tire. Tires aren't perfect and have heavy spots. Most static balance out around .25 ounces.
I've seen .50 on some rear tires.
I can feel 1/4 ounce out, at 70 MPH. It really shows up at 80 to 85 MPH.