History Rippled whitewalls

Picked these up at a swap meet a while back and can’t seem to find any real history on them. I think I’ve only seen them used once or twice. Anybody know?

 

Prewar Goodyear premium product ...

 

Coker Tire I think still possibly sells them.

 

There's a guy here in town running those on a really nice restored F1.

 

I have some of those on my 29 sedan. Kelsey Tire in Camdenton, MO. sold them about 20 years ago.