Tire: tale of woe.

[vet57air]

I have a Pro tour 66 Chevy pickup that I call a Cgt. Took about 2 years to build. Near the beginning of the build I bought a set of Pirelli Pzero tires 325/35/22 and 255/35/22 as I needed them to build the truck. But I have a problem with them. Started out as a vibration at 57mph. Nothing below and would go away after 58. Have had the fronts rechecked for balance. One of them they broke the bead and moved the tire on the rim. Needed half the weights to balance. But problem remained. Thought I would live with the issue but now in addition I get a sustained vibration after 70mph. Warranty was up before the build was finished and now with 1700 miles am wondering if new tires are the only answer? Anyone else have issues with Pzero's?[ATTACH]
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