I just commented in the other thread, I have a set of 18 " Winter wheels and tires, because it was cheaper to buy that, than it was to buy 20" winter tires and install them on the factory wheels. Plus it saves me the risk of damage to my factory 20in wheels twice a year when they mount and dismount them, and put my summer tires on. in addition to eliminating risk of damage to the factory wheels, they don't charge me $75 every season for the tire swap over/rebalance etc, they just pop the new wheels and rims on for me every season for free.
I learned this the hard way when I had a tire shop mount nokian hakkapeliittas on The factory 21 inch wheels on my GLS 450, and they would regularly nick/scuff a wheel. I paid 75 bucks twice a year to swap the tires around, and ended up with marks on the rims.
By the way if you want a truly incredible snow driving experience, try the hakkapeliitta (what is also incredible is that my phone converts the word hakkapeliitta from speech-to-text properly).
as I mentioned in the other thread if you're in the Northeast, Town Fair will match any legitimate published price, and then they will swap the wheels and tires for free every season. They also have the proper tools to flash the TPMS, although I don't know what brand TPMS is used in my winter wheels.