Change to summer tyres
In Austria from 1st November to 15th April the following year there is a weather-dependent winter equipment rule. Winter tyres must be fitted on all wheels for snow-covered roads, slush or ice.
From April 15th onwards summer tyres perform much better than winter tyres. Changing from winter to summer tyres is therefore recommended. It is not however compulsory to fit them.
More information is available in German here.