Winter tyres: advice for safe driving - A tyre that changes colour when it’s time to switch to winter tyres

A tyre that changes colour when it’s time to switch to winter tyres

Winter tyres Published the 30/09/2015 by John

Many drivers are unaware that winter tyres may be needed even when roads are not covered in snow. Canadian Tire suggests an interesting solution to illustrate this.

Canadian Tire introduces a temperature sensitive tyre Canadian Tire introduces a temperature sensitive tyre whose sidewalls turn blue when the temperature drops - Copyright © : Canadian Tire

Take the temperature

In general, drivers imagine that snow tyres must be fitted in winter, but many make the mistake of thinking that they are only needed when roads are covered in snow. By design, a tyre is developed depending on the temperature in which it is used: summer tyre is developed to deliver optimal performance in mild or warm temperatures, but becomes much less efficient when the temperature drops below 7 degrees Celsius. Below this temperature, the rubber hardens: Braking distances are longer, grip is less reassuring when cornering and it is more prone to sliding. In these conditions, winter tyres must be used to deliver the best possible performance.


Colour as an indicator

Canadian Tire has therefore thought of a simple solution which would tell consumers when conditions dictate that winter tyres are needed. Given that a recent study found that 80% of Canadians were unaware that a summer tyre or an all-season tyre is less efficient when temperatures drop below 7 degrees, they have developed a tyre that changes colour based on the temperature: When the sidewalls are white, the tyre (all seasons in this case) is within its operating window. But when its sidewalls turn blue, the temperature has dropped below 7°C. Therefore, to get the best possible performance, it is best to fit real winter tyres. A simple solution to raise awareness among consumers on the importance of fitting tyres adapted to the weather conditions?