Just change them, not worth taking a chance on your life or car.
I'm working on my A66 Challenger convertible that was in storage since 1984. At the time I put new TA radials on the car.
Out of storage, they still held air, and had most of their thread.
Good for moving the car around the driveway, NO way highway.
Be safe and change them.


1970 A-66 340 Challenger convertible