[ZeGermanHam]

Originally Posted by Geoff

Be aware that there is a downside going too big on a/roll bars. Bigger AR roll bars will make the ride harsher under some conditions.

This. Sway bar diameter absolutely has a direct impact on ride quality, since the sway bar is a heavy gauge spring which physically connects one side of the car to the other. Stiffer the bar, the more upset the suspension will become if you hit a bump on one side but not the other.