milehighpan: Congratulations on your new Pantera. Dale & I are new owners also.
I got my Pantera with Radial T/As. They are a long life hard rubber tire. When I take the freeway corners at around 90mph, they allow the car to hop a bit around the corner when hitting small bumps in the road.
I would recommend a softer rubber. Better cornering and grip on the road.
Sorry, I don't know about the valve stems, except that most mag type wheels have different types to keep the air in.
Wink
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