I don't think we have a thread for this, a sort of general auto (not BMW specific) place to discuss tyres.
I'll start with my latest decision making process where I am growing tired of the rapidly increasing price to switch from winters to summers and vice versa, it used to be $25 but has recently risen to $80 or so. Twice a year and I am out near $200 which is nuts.
I only drive 3K Miles a year (5K KM) and the wife's SUV does any family winter hauling on dedicated winter rubber so decided to look for a winter weighted all season for my beater DD. Turns out there is a new type of tyre call All Weather (not all season) that can cover the plowed roads driving situations here reasonably well. So after much digging around I found a set of Michelin Cross Climate 2, obviously no winter experience yet but so far this summer the experience has been..... interesting. Ride quality is outstanding, maybe not surprising for such a soft tyre, but it definitely has it's quirks. Under hard braking or if I slide the tyre (I drive a 16 year old Saab wagon) I can feel the tread separating and moving.
It's hard to explain but the tyre has a very aggressive tread pattern...........
and one can sort of feel the individual parts of the tyre move about in warmer weather and when pushing the tyre. This likely bodes well for winter but it'sa weird summer driving experience.