Hi,
I found scarce ammount of results on Pirelli P Zero Rosso Asimmetrico (N5) 2 users liked them, 1 user didn't but didn't give any explanation what is wrong with them. Do you have any personal experience with these tires?

 

No personal experience but Tire Rack has over 500 reviews for them. I think these are the same tires - at least the tread patterns appears to be the same.
https://www.tirerack.com/tires/pirel...RatingsReviews

PS - not great tires according to the road tests, and they only appear to come in sizes 18" and higher...200-300 treadwear.

Look into the Continental Extreme Contact Sports - great summer tire, great value for the price (based on my personal experience), and much higher rating than the Pirelli's

 

Porsche homologated are available in 16":
https://www.pirelli.com/tyres/en-gb/...sso/225_50-r16

 

They look the same as before. If they are truly the same...
After mounting and balancing tires on alot of Porsches, my experience with them from about 15 years ago was that they were very light, and made the cars feel really nimble.
Can't speak to overall grip...
I also used to joke that people thought they were called 'Assimetrico' due to the asymmetric tread pattern.
When, in fact, they were called that because they couldn't stay round...

 

I've used Pirellis on sports bikes for years, but I only usually. get 1 summer or 3k miles out of them. Pirellis on cars, I've never really got on with. I find the performance drops off well before they're anywhere near worn or past 4-5 years old. I've had 3 sets of Michelin PS2's on my 944 in the last 15 years. And 3 sets of Continentals on other cars.