[Rick Parker]

I have been fighting this phenomenon too. Up to 60mph on smooth asphalt it was ok but past that and it began to shake. Much worse on concrete freway with the tar strips. Tires and wheels had been spin balanced. Yesterday I went to Roger Kraus Racing and had them Dynamic balance the two front wheels & tires on the Hunter machine. It necessitated puting a small (1/2 oz) weight on the polished outer surface, with the rest of the weight to the inside. I am going to put the wheels back on the car tonight and test it tomorrow and will report back. I sincerely hope that was all I needed.

Rick

PS: As a side note to the following post, perhaps the tri bar knockoffs themselves affect the "shimmy" after the wheels have been balanced off the car? Food for thought????