Winter shoes for the new Caddy

Hi, I just bought a new caddy, because it had to be fast, it had to be one of the bars, otherwise I would probably have ordered all-year tyres when ordering. It was delivered with 205/55 R16 94H on 6Jx16 Alu ́s. The standard tyres in the appearance is 195/65 R15 91T Now I am thinking about how I might possibly switch to all-year tyres, or if I should get winter tyres on a second set (steel) rims. I drive only a little in h öhere regions, and with us on the Rhine there is only little snow. In addition, I have a relatively low total driving performance of approx. 9TKm per year. Advantage separate winter tyres: slightly better running characteristics in winter and in summer probably a little less wear Aluminium rims are not exposed to the road salt in winter Advantage All-year tires: cost and effort for 2x changing per year spared costs for steel rims storage of the tires no longer necessary A car driver has made me very clear about Win terpneus on the smaller steel rim. That would be such a common size, which would therefore be quite favorable (with it steel rim + Nokian WR D3 incl. assembly, valves, force and plugging for 110€/pcs=440€) In an inetshop I saw the combi incl. assembly, force, valves and delivery for still less than 100€ /4pcs (for changing then I still pay here about 20s). Can somehow not decide, what do you mean? And if, winter tires, someone knows the Nokian tires? W enn all-year tires, what’s in question? Greetings Tom