I purposely drew this picture years ago to explain to my friends..
Sway bar is to transfer load to the opposite wheel when one side is depressed, thus reducing the "sway", the thicker/stiffer the bar, the better it works. One good example is the old mini bus Wilayah, super thick sway bar can be seen from behind which prevents the bus from topple over despite fully loaded with passenger. Can still rempit in the tight KL roads.. :top: