Hi,
Dont drive on summer tires in WINTER!!!
You are asking for trouble. Not to mention the people you may harm as a result of an accident which you will have sooner rather than later.
Summer sport tires will slide on even cold bitumen.....On ice or snow your playing with your and others lives mate.
My summer tires are Pirelli P Zero's and even when the temp is under 8 degrees celcius they are NO good at all.
Put the car away or buy the winter tires.
Just my 2 cents..