Even front wheel drive?
Any explaination behind it?

There are a lot of reports feedback PS4 does better overall compare to PS5, FYI PS5 is not a replacement for the Michelin Pilot Sport 4 AND 4S.

https://www.tyrereviews.com/Article/What-is...lot-Sport-5.htm

The only advantage PS5 over PS4 is only the tread life, the rest PS4 did better overall performance.

The biggest changes to the PS5, when comparing it to the PS4, seem to be vastly improved wear. Michelin have always been one of the leaders in wear, but it's fair to say the PS4 fell short of its usual standard, often performing averagely at best in wear tests.

Unfortunately, increased wear usually opposes grip during development, which means a huge jump in tread life like this, often reduces grip.

PS4 = High performance, high wear
PS5 = lower performance, lower wear

I will stick back to PS4 since want buy this performance tire is for what it is intended.