Who is talking about tires / tyres here? You can debate all you want for which rubber you like to kiss. Fact was that OP proved the OEM all season combined with xi set up worked in 10" of snow. Case closed!
Please don't patronize me about this as I coming from The proper RWD with snows in E46, E90 and X3 and X5 with all seasons for the wify.
Wify convinced me to try a F30 335xi with all seasons this time. So did I without monkey around tires and wheels package twice a year.
All in all, look forward to a white Xmas to play with my mspot 335xi.