One more suggestion: go to a softer sidewall tire.

On our 04 NON sport we changed the OEM Bridgestones
to Yokohama YK520’s for a noticeably smoother ride!!

We did lose a small amount of performance
HOWEVER my butt meter thinks that under most conditions other than a manicured race course the YK520’s will OUT perform the turanzas due to the fact that they will be in contact with the road and not bouncing around

ab