When should you change to winter tires?
Change to winter tires when temperatures stay at around 7 °C or lower, and before the first frost or snow, not after it. In much of Central and Eastern Europe that usually means from mid-October to early November. Local law can add its own rules: Germany requires winter tires in wintry road conditions, and Austria requires them from 1 November to 15 April whenever conditions are wintry.