Thinking on the lines of buying 4 steel rims and have them fitted with winter tyres. Currently running 225x45x17 Pirelli Rosso's. Have seen steel rims on sale on E-bay from Germany, but they are all 16", and some even come with tyres fitted. Need advice on a suitable tyre type and size for 16" or 17" rims. Can I fit 16" rims with 225x55x16 winter tyres and have good performance in snow and wet? Or would slightly narrower tyres be better? Any and all advice really appreciated. Car is as signature.