One thing I've found is as a tire tread wears down it runs hotter or put another way my new tires ran cooler when new as they sit up on the treads blocks/grooves for more air circulation .... after the tires wear in period.
As a young man in the '50a/'60s the trend was to run tires down to the cords. Boy did they ever get hot at speed.
The picture of the tread of a ST looks like several ST brands.
Some one says don't get hung up on details about a tread pattern. Good advise as there are several LT tires out here with different A/S tread patterns that make excellent tires for a road trailer.