I run them on my standard 19” Le Mans and run mid-low 30’s all round. Mine are ps3’s so older than yours. I’d imagine the Pa4 will be a decent upgrade from the 3 as is usually the case with Michelin. My ABS kicks in so much sooner than on PS4s’s it feels dangerous and don’t even get me started about pulling out of junctions with lock on and over 1/3 throttle!
I find that other than in snow and ice they are pretty pointless, and below 7 degrees the ps4s’s just need a bit of time to get some heat into them, once they’re warned a little bit the braking/traction comes back
Ah, I bought a set of 18" for winter use and so am using slightly narrower tyres, ie 245, if I'm being honest, I have left these winter tyres/wheels on for the past 24 months due in part to us going for an early Spring break when a lot of rain tends to fall - and Covid sort of stemmed much "trips away" this Spring, Summer and Autumn. These Michelin Alpins, and I've run Alpins and Pilot Alpins previously seem to last for ever, though typically only used November to April, I have had lots of bad experience of Michelin Summer tyres, both Exalto and Primacy HP, it was first the Exaltos on my wife's VW Polo that forced me to get her a set of smaller steel wheels and Alpins, then a year later conditions seemed to be a bit nasty and Michelin Primicy HP's could not keep me in control descending my driveway in my VW Passat 4Motion, so I bought a set of very slightly used Alpins - no other option at that point in winter if I wanted Alpins! After that "I've never looked back". Sometimes it takes a very special type of winter weather to force you to change, since 1991 I've only had 4WD cars and never had any issues, prior to that 2WD cars and the same, no real issues driving in winter - but once you have experienced trickier conditions, common sense can force you to prepare for what might come your way!
The last time that I was buying new Michelin Exaltos for my wife's 2002 VW Polo, which was at Costco, the tyre fitter said, before I confirmed my order "I hope that you don't plan to use them in winter up here" - I confirmed that I had worked that out already, modern premium summer tyres, ie the ones fitted to new cars for sale in UK, have evolved into being not fit for use in winter conditions for most of UK mainland if you need to get out and about.
I'm not a "winter tyre preacher" I'm just someone that found out the hard way that for where I live and where and when I need to drive, swopping summer<>winter tyres/wheels is the best way.