Bought 100 miles ago to replace a set of Pilot Sport 4 Zero Pressure on a modified F30 3 series, which is an excellent tire in it's own right. By far the best 18" run flat choice for BMW & Mercedes owners, by a country mile. And it's worth noting; a full set of Sport Evo is currently over £200 cheaper than a set of PS4 ZP.
With the Sport Evo being non run flat, there is an inevitable and noticeable softening of the initial turn-in, but it loads up very quickly thereafter and feels very responsive and grippy. Applying more steering mid corner doesn't phase it. The car goes exactly where you point it.
No rain to speak of for weeks, so can't comment on wet grip yet. Ride comfort and noise levels are obviously very good compared to a 40K mile old run flat, but the Sport Evo is definitely on the stiffer side compared to other UHP non run flats, but this is why enthusiasts buy Potenzas in the first place. No one likes squidgy, squealy and numb cornering from their performance car.
I would put the grip levels easily on par with the ContiSport 7, but has a much better turn in than the CS7. If you are an enthusiast and want to bin off run flats but don't want to sacrifice too much steering feel/precision; these are the tires for you. if you are not an enthusiast but want grip at a great price; these are also the tires for you.