We too live in a climate that requires winter tires. The wife got the upgraded 21" staggered wheels on her X5 so cannot just buy tires and not rims.
Shipping costs just too great to TireRack it and the local tire shops, frankly, are very expensive for the sized wheels the 2019 X5 requires. Heck, even Costco (our goto) is cost prohibitive (and they didn't even have wheels in stock for the X5). So off I went to the local BMW dealership where I picked up these 19" wheels with Pirelli Scorpion Winter 265/50 R19s. $2800 USD. Not cheap but just barely more than TireRack shipping with wheels that I don't think looked particularly good.
I'm putting them on in two or three weeks.
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2005 Nissan Xterra SE - hers
2011 BMW 328i xDrive Sports Wagon 6-speed - mine
Old: 2019 BMW X5 xDrive40i (hers), 2016 BMW X5 xDrive40e (hers), 2010 Dodge Ram 1500 4WD, 2008 Subaru Outback AWD, 2001 Dodge Dakota 4WD, 2000 VW Golf, 1991 Dodge Ramcharger 4WD, 1988 Mercury Topaz AWD, and 1987 Mercedes-Benz 560SL