I am on my second set of Coker black wall 6.00 x 16 on my 1949 Ford Custom Fordor. The first set lasted about 40,000 miles and still had tread, but they were over 15 years old.
I believe that everyone has their own opinion on antique vehicle tires, so hopefully you will hear from others.
The one thing that I can tell you is that they are no longer as cheap (cost wise) as they used to be.