These are very preliminary observations, tires barely broken in. Rain won't likely be encountered locally for next several months. I replaced the OEM Dunlop all-season tires with these, so far seems a good choice. Tires are 225/40R18, manufactured November 2011. I mention this because a Corvette forum recently posted (quoting Tire Rack source) that production of this size was more recently interrupted to add more reinforcement to the sidewalls on tires now being produced.
On-center feel is quite decent, little tramming evident. I don't have Tire Rack's sophisticated measures of dry traction, but the unplanned front wheel spin I often experienced with the Dunlops from standing start with only modest throttle has been tamed.
Comfort and noise are just fine at highway speeds. After all, this is a Y-rated tire, compared with the H-rated Dunlops. Small bumps at low speed are heard and felt, but very tolerable in a sports sedan. Hoping for reasonable and even wear with continued relative quiet. Have zero tolerance for cupped tires with grinding, bearing-like noise.
Not much of a rim protection rib is evident, not that those accomplish all that much.
Stay tuned for updates.