It may not be a balance problem then but depending on the age of the tyre could be a function of the tread pattern producing a vibration from the tread blocks on the road surface... it would be lessened with wear as the blocks get shorter/smaller???
This could also be working in conjunction with the suspension set up to produce a harmonic vibration imbalance related to the interaction of the tyre and the suspension.
Dynabeads, tyre weights, Counteract, none of these will cure it if it is too large an oscillation.....well, not with normal amounts of beads anyway... weights will never cure it as the vibration occurs well outside the speed envelope of any balancer.....
This is theory, not fact..... difficult to prove without vibration analyser.
This could also be working in conjunction with the suspension set up to produce a harmonic vibration imbalance related to the interaction of the tyre and the suspension.
Dynabeads, tyre weights, Counteract, none of these will cure it if it is too large an oscillation.....well, not with normal amounts of beads anyway... weights will never cure it as the vibration occurs well outside the speed envelope of any balancer.....
This is theory, not fact..... difficult to prove without vibration analyser.