Contrary to the claim by Avis in Fort McMurray, all-wheel-drive cars absolutely need winter tires too. They are not immune to the laws of physics, and once you lose traction the coefficient of friction (i.e. the stickiness of the rubber tires) is the only factor that can help you regain control. In addition, there is nothing in an all-wheel-drive car that will reduce your stopping distance, which depends only on your tires. All-wheel-drive cars tend to be heavier than ordinary vehicles, so there is even more momentum to overcome when stopping or turning. It was very irresponsible for the Globe to republish that comment within this article without clarification.