These aren't cheap at $330 per but they have a nice sidewall design. I don't know anything more about them. https://www.kelseytire.com/antique-classic-military-series/
Ok, 1 out of their selection is like that... So Ill rephrase, the majority are manufactures tires, cut and whitewall added to them.
After my fiasco with Coker Tire, I installed B. F. Goodrich, wide whites on my '46. After 20K miles on them they look new, with zero wear. Plus, they are a nationally recognized chain, so if you ever did have a problem any dealer can help you.
What? "The first radial tire designs were patented in 1915 by Arthur W. Savage, a tire manufacturer (1915–1919), and inventor in San Diego, CA.[3][4] Savage's patents expired in 1949."
just because something was produced and maybe a handful of people used em on hot rods does not make it a traditional hot rod part. Look in some pre 65 magazines and let me know how many hot rods used em....