Snow tire and wheel recommendations for M3

For those of you planning to drive your new M3/M4 in the snow this winter, what tire and wheel set up are you planning?



I originally wanted to go with OEM 18" M3 wheels with OEM size snow tires, but there are no snow tires available with the OEM front/rear sizes. Pirelli does make 19" snows in OEM sizes but that would require OEM 19" M3 wheels which are expensive.



Anyone know of a better idea? Are there after market 19" rims that will work on our new cars?



Thanks