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Originally Posted by Dion
No, I didn't miss the point on winter tires.
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Have fun on those -15 / -20°C mornings we tend to get. You don't realize the extra traction that you're missing until you need it...
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MYTH: I don't need winter tires. I've got a good set of all-seasons and they'll get me through the winter.
FACT: All-season tires should be more accurately called three-season tires. While they have improved abilities in wet weather over 'summer' tires, they fall prey to winter's first line of attack on wheel traction -- cold temperatures. Richard reminds us that at 7 degrees C, the rubber compound in all-season tires becomes stiff enough to compromise traction in emergency manoeuvres or panic braking, especially if the road surface is wet or frosted. And of course all-season tires don't have the tread design engineered to provide improved traction with winter's second, third and fourth battle lines -- snow, ice, and slush.
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http://autos.canada.com/story.html?i...5249be&k=69585
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All-season tires can begin to lose their grip when the temperature drops below -10° C. Winter tires are made for cold and snowy conditions. They remain more flexible than all-season tires in colder temperatures
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http://www.mto.gov.on.ca/english/saf...intertires.htm