I was in the same boat with my Ranger. I felt guilty taking the free tires. The only reports of problems with the Wrangler AT tires were in warm climates when people were careless about inflation and drove long distances at high speeds. Idiots, in other words.
I loved my Wrangler AT, btw. My 4FWD Ranger with the Wrangler AT was the absolute best “snow car” I ever had, it could drive through several inches of unplowed snow handily. The replacement tires were never quite as good. I’d buy Wrangler AT if they still made them, any day.
I lived in Dallas at the time. Sometimes in the summer the temp could get up to 3 digits. Once you got out of the city, there were long stretches of semi-deserted highway, just begging for you to hit the gas pedal. I didn’t think it was worth the trouble to get the new tires, but my hubby seemed to think it was important. I procrastinated so much that he took my truck in himself.