Been pulling z520c with 99 suburban, trailer level for 4 years. Looking in side view left tires rides smoothly.. can't see right side.
Pull it with 2018 Yukon xl. With a 8 inch drop (seems to be about an inch or so higher than before) left tires bounce like crazy.
No swaying at any speed.
Could an inch make that big of a difference. Been looking for a 9 but unable to find one
And I have switched both trucks back And forth several times, and there is a difference . I can see it as well as feel it