Winter, all-season and summer tyres
In cool temperatures, summer tyres do not provide the performance that winter road conditions requires. They are made with different materials optimized for warmer condition and they can, for instance, harden under cold temperature lowering their grip level. Summer tyres have difficulty to grip the road in snow or icy conditions.
The differences can be startling:
A typical car travelling at just 31 mph¹ on snow will take 48 meters to come to a halt with summer tyres – a scary 78 feet more than if the same car is equipped with winter tyres.
1 Braking distance on snow from 31 to 0 mph. Test carried out in 2007 by independent testing body "Test World" in Ivalo, Finland using 195/65R15.
All-season tyres are designed to be driven year-round, but if you live in an area with severe winter conditions (heavy snow or ice), they may not be sufficient. All-season tyres are designed to perform well in a large range of conditions, but not to handle the worst. Winter tyres can provide you with the extra grip you need to get through deeper snow or ice-covered roads.