Do You Need Winter Tires? The 7°C Rule Explained
It's not about snow — it's about temperature. Why rubber chemistry changes below 7°C, where the payoff is biggest, and when all-seasons are honestly fine.
Read the guide →Five plain-language guides for Canadian drivers: when winter tires actually matter, what to look for when buying, how to inspect a used set, and how to store them so they last. No brand hype, no invented specs — just the decisions, explained.
Start with the 7°C rule
Each guide is written as a "what to look for" walkthrough — the practical checks that matter, the opinion clearly labeled, and the safety caveats up front.
It's not about snow — it's about temperature. Why rubber chemistry changes below 7°C, where the payoff is biggest, and when all-seasons are honestly fine.
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The 3PMSF mountain-snowflake symbol, sizing basics, tire age, and the questions worth asking — general guidance, no model picks.
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What the rule requires, who it applies to, and what drivers in the rest of Canada should take from it.
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Tread, wear patterns, sidewalls, age, and the red flags that mean walk away. A used set can be a bargain or a liability — here's how to tell.
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Clean, bag, and store them right, and your winter tires start next season in good shape. The 20-minute routine that adds seasons to a set.
Read the guide →Below about 7°C, winter-tire rubber stays flexible while all-season compounds stiffen — and grip is what keeps you out of the ditch.
Mixing winter and all-season tires makes the car's handling unpredictable. If you can't do four, don't do winter tires at all.
Winter tires are mandatory in Quebec from December 1. The rest of Canada treats it as strong advice — the physics doesn't change at the provincial border.