What temperature is too cold for all season tires?
When the seasonal temperature falls below 7 °C (46 °F), it’s time to switch to winter tires. Winter tires perform well in all cold weather conditions, ranging from snow and ice to wet and cold dry roads. The 7 7 rule for tires provides a simple temperature guideline for timing your seasonal tire changes. Install winter tires when daily temperatures drop to 7°C (45°F) or below for seven consecutive days. Remove them in spring after seven straight days above 7°C.