[floored]

I had the same problem with another car I owned a few years back. I took it everywhere and could not get the tires to stop shaking at high speeds. Brand new set of Michelin tires. I got a flat one day and stopped at a Michelin tire dealer to repair it. I explained my disappointment in the tires to the owner. He claimed that most shops don't do real high speed balancing. He said he would take care of it and sure enough he did. No more shake. I assume he was telling me the truth since it worked.