Really! I never heard of that before. So this doesn't show up on a tire machine? Also, what is the solution? You said you rebalanced your own, so what did you do differently?
Well it's the weights being 180 degrees from each other if there's more than 2weights on the wheel. It makes it hop at a certain speed . It's called counterbalance I'd go to a big company tire shop and et them rebalanced