Rims / tires for winter – please for support

Hello together, I recently bought a Leon ST, which is currently still on summer bikes at the dealer’s. The weather is slowly becoming wintery and I need suitable tyres accordingly. Because of the rideability in winter I tend actually to 17 inch winter complete wheels. However, I lack the experience, which rim/tire combination is best. Could one also take VW complete wheels for Golf 7 and simply exchange hub cap for one of Seat? How are your Erf What tyres or rims are recommended for Leon? I would be very grateful for your advice.