Can't badmouth the Hankooks that I had on my '03 2500. Went through 2 set of them @ 50k plus life expectancy. They rode well, were quiet and smooth, and did very well in Colorado and Wyoming in the snow. They were also made in Korea.
Fast forward to my new truck. It came with Firestones (Utter garbage) so I bit the bullet and got a set of Hankooks. Couldn't make them run smoothly at all. Tried indexing them and road force balancing. No good. Tire store warranteed the 2 worst ones and tried again, still felt like a paint shaker at 65. While examining the tires for run-out, I discovered "Made in China" in the sidewall. Not saying that's the reason, but it's a strange coincidence. I installed a set of Nitto A/T's and cured the problem. Very smooth now.
FWIW.....
