I really enjoy the Potenza Race on my GR86. As you say, great reactive steering, not too noisy and they go around the track very well! I was going to use the OEM PS4 for street use but I hate how soft they feel so I run the Potenza Race on street too and they work great. Of course in the winter I will switch to proper winter tires. I have not driven extensively in rain but the rain I've driven in didn't cause any issues or felt unsafe.
I do have some wear on the outer shoulders from running on the track, but it might be because I'm running a moderate amount of camber for track use (slightly less than -3 degrees. On a McPherson strut I probably need closer to 4 degrees. But since its mixed usage I think it's going to even out over the life of the tires.)

Extremely good competitor of the Michelin cup 2 connect ! Daily usable like the cup but more grip and precision. Grips like a trofeo r, but has a harder sidewall In wet conditions it’s like the Cup 2 which is very good for that amount of grip.

Amazing tyre in all conditions, except wet!

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I purchased the Potenza Race since i couldn't find the 595RS-RR, and i don't regret it
They are mounted on 17*9 rims, due to some low tire pressure 1.8 front and rear, i had the front tire wear the sidewall too much compare to the inside, the grip is enormous with the right tire pressure, the road feedback too, you know what the tire want to do
In the rain it was mindblowing, the wet grip was like 85% of the dry grip, with the same feedback
The only downside is that there is no 245 in 17"

Grip very well, maybe a bit better than cup2 (friend had them on i20n and I was just a bit faster on some corners, also drove a lot together on Pilot sport 5, so we can compare the cars and tires). I also had cup2 so I can just slightly see the difference maybe. Wet grip excelent no complaints its like a normal street tire. Cannot hear them and they dont feel harsh.
Only thing that is bad is wear. I only got 5000km out of them (cup2 11000km) but i was pushing a lot more than on michelins. Michelins also come with a bit more tread. For 700€ a set, it is too expensive to change them this often. Cup2 were 570€.
Potenzas come with 5,5mm.

It s an amazing tyre in all condition!!!