I had a local tire dealer that found chevron tires in the right size for me. They looked just like those and were not DOT rated, plus horribly priced, so I passed.
The tire catalog we found them in was for off road construction equipment.
The tire dealer also noted something when he looked at the pictures I was showing him. All of the Chevron tires on the HT's had some sort of "road band" area. What he meant is that the left and right "lug" is somehow tied into each other near the middle of the tire and thus making a rather solid center section for better on road wear and drivability.