I've had them on my 32 Cabriolet for the last 5 years - probably have 3000 miles or so on them. I really like them as they don't wander around like bias plys and have good traction. I've had them up to about 75 - 80 MPH - no problems in the least. They are expensive, but I think worth it. It is nice to be on a highway and not have to be 200% prepared for any little crack or bridge overpass - like I had too with bias plys . . . just a more pleasant driving experience.
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