The old rule "narrower = more weight per cm² = better grip" still holds true.. But for studded tires. And keep in mind, in the olden days a winter tire was always studded. Then during the 90s the unstudded winter tires became so good they were a serious alternative.
As for maximum grip on snow...
I own two Porsches, a 2023 Taycan Sport Turismo GTS in Carmine Red, and a 2015 911 Carrera 4 GTS in Guards Red.
Generally the 911 gets a lot more attention. It also makes a LOT more noise which makes it grab more attention. There is however an exception, I live in a city where winter tourism...
As I said, my consumption was never below 55 kWh/100km when the car was new, and it's down to about 25 kWh now. 18,6 is the best trip I've done. Recuperating energy has a massive impact, at least driving around my hilly town. And as I said, if you only do highway miles it will matter less.
If you drive 100% of the time on highways the difference is little, but recuperating energy when braking helps everywhere.
But people also drive in town and neighborhoods a lot of the time and getting absolutely zero energy back to the battery is terrible for range.
And using the button to...
Weird how my consumption was never below 55 kWh/100km when the car was new, and down to about 25 kWh now. 18,6 is the best trip I've done. You can also see it in the Powermeter-display. A new car doesn't recuperate ANY electricity. That's devastating to the consumption.
A brand new Taycan will not regen, at all, for the first approx 1000 km. The consumption will be terrible for obvious reasons. Once it's done with the initial run in and start regen braking it will improve massively.