(They are made by National tire the same company makes Chapparall tires and a number of other brands) National does not make tires. They are a private label company and their tires are made by other manufacturers in the US & abroad.
Cooper tires makes them
Yokohama makes Prodigy Tires.
Maxxis makes Aspen tires.
Firestone makes Champion tires.
Who makes tex star tires
Cooper Tires makes the Eldorado tire.
The Bridgestone Corporation of Japan makes Bridgestone tires
tires-easy.com
The company that makes the best car tires is mainly a matter of opinion except there are a few brands of tires that are better: What company makes the best car tires
Michelin Tire Corp makes Riken Tires
Michelin Tires