Hallmark tires are made by the Kelly Springfield Tire Co. which is owned by the Goodyear Tire & Rubber Company.
Cooper tires makes them
Yokohama makes Prodigy Tires.
Firestone makes Champion tires.
Maxxis makes Aspen tires.
Not quite sure what your asking but hallmark is a company that makes different cards (I'm sure you know) but a hallmark can also mean
Who makes tex star tires
Cooper Tires makes the Eldorado tire.
Sumitomo Chemical
The Bridgestone Corporation of Japan makes Bridgestone tires
Michelin Tire Corp makes Riken Tires
The company that makes the most tires in the world is Bridgestone.
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