I've had weird experiences with uniroyals. last set came to me brand new on a used car. 3 were truly excellent tires. 1 was so badly out of round you could SEE it. On the back of the car, it was not noticed until I eventually rotated them, then it was multiple trips to try to balance the wobble, to no avail. Finally with the car jacked and the tire spinning in gear, you could easily see the gap closing and opening above the garage floor.