Hooked pulling front wheels then spun

My father took a slow motion video on my car with an M&H musclecar DOT tire on it. It wrinkled enough that you could see the bottom section of rear half of the leaf spring separate and pop back each time it ran over a wrinkle. So I thought I needed a couple lbs of air pressure. Nope, I guess it wasn’t running over the tire too much, because it hooked much better slightly running over the wrinkle.