I moved from Bridgestone to Pirelli PZero (run flats) and noted a slight improvement in ride. I then moved from PZero's (RF) to non run fat Michelin PSS and this improved the ride very notably. Changing the road imperfection 'bangs' to 'thumps'. I have noted the grip is less on the M PSS compared to the PZero's but its not by much. Overall I'm very happy with the switch to M PSS as the ride is so much better. I have though also noted the compound appears softer as the tread looks a bit torn and feathered (even though alignment is spot on) with the M PSS. So far wear appears roughly the same.
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