Originally Posted by cv129

Either your feeling is accurate (ride quality had deteriorate), or that ride had been the same but you are now more aware of it with the longer ownership (1 yr).

If it's real, I doubt it's the shocks.

Outside shot: What tires do you have, and how worn are they? Your mileage would coincide with either a need for new tires or recently changed tires, I assume.

If you have old Potenzas: My experience is summer Potenzas yield significant increase in impact feel and noise as they wear down. I could feel a big difference even in my G37 sedan with RE-11, let alone in the Z. The increase noise and impact sensations at full tread vs 6-7/32 tread depth vs 4/32 tread depth are very notice
able.