I got mine from a tire distributor in Tulsa, OK. Some off-brand, made in China. Coker classic tire has a 7.50x20 or 8.25x20 highway tread. Its a classic Firestone tire highway tread. Thats one of the places online. I think I found a place in Dallas that sold them too. Maybe it was Wallace Wade? I searched using classic tires, or vintage tires. I found more results that way.
