PS4S on my 911 seem to be performing well. Quieter, with good grip in the dry. Haven't had the opportunity to try wet roads. Consider these tires for your 911.

Upgraded from Primacy to Pilot 4S. Changed the entire character of the car. The car was fun as easily tossable on the Primacy tires, but the Pilot 4S tire significantly increased the overall performance. Turn in is particularly awesome.

I bought these tires early this summer, and absolutely love them. They greatly reduced the harshness of my very stiff suspension, while being quieter and having insane levels of grip compared.

Excellent traction in dry and wet. In acceleration, braking and cornering. I have no idea how they would be in the snow and I won't be finding out. expect they wouldn't be good. Have snow tires

Had 4s's for a little over a week now, hands down out perform all tiers I had to date. Theyou are better in cold temps by far than Pirelli p zero...Haven't listened for noise just yet.. Maserati

I bought set to replace defective Continentals on my C300. They transformed the car to a smooth well handling luxury machine. I also bought a second set for my C63. Will put them on once that backs are worn a little more. Overall fantastic tires.

Switched from Michelin Primacy to the 4s and the ride quality and handling improvement was a nice upgrade. I live in a fairly warm climate with good road surfaces.

Very god tires for the street and quite good on the track. They tended to overheat at track days and not quite as good as the Michelin Cup 2 for track duty. Excellent comfort, noise and wet grip.

Great tires for daily or track or they stick well in cornering on dry or wet conditions other than they don't last that long and are not cheap. Good for sports car

Best all-around performance tire, excellent in rain. They do wear quickly but that is understood with sticky compounds.. Hydroplaning resistance reduced quickly with wear, but still the only performance tire I'd trust