Here's a good write up (one of many) on Tyres
https://trackdays.ie/track-day-tyres/
There is a Youtube video reviewing PS4 vs PS4 Sport and PS2 cups in an M3 or a Porsche, that I see once and it was predictably PS4 best road tyre in wet, then PS4S then PS2 cup, which he said not great in wet. Then at other end of scale for dry performance. PS4 overheated too quick, PS4S great on road and track but then PS2 cup another level.
It's like most things really the best at one thing might not be the best at something else, so you have to decide what you want from your product.
I did price up PS2 cups but ended up going R888R's as I think they look more semi-slick and the Toyo's were cheaper. On your car R888R's will be mega when warmed up.
Also look at Tyreleader.co.uk, where I got mine from
https://tinyurl.com/yajd36xe
Just checked out Bosstyres.com and they have PS2 cups for mine at £132 each (were like £179 last year!)
I know other people don't recommend Tyreleader, but I had no trouble with them or Boss Tyres.