Winter tires in Alberta: the law, the dates that apply next door, and when to switch

Does Alberta require winter tires?

No. Alberta’s own guidance says the province “has not mandated winter tires” for the winter months. It does recommend driving in severe winter conditions on four winter or all-weather tires for better traction and control — four, not two. (Alberta.ca)

Where they are required — close to Calgary

• Banff National Park — Icefields Parkway (Hwy 93N) and Banff–Windermere Highway (Hwy 93S): snow tires or chains are required by law November 1 to March 31, or whenever those highways are covered with snow or ice. (Parks Canada)
• Kootenay and Yoho National Parks, on the BC side (Hwy 93S and the Trans-Canada, Hwy 1): October 1 to April 30. (Parks Canada)
• British Columbia: winter tires or chains are required on most routes October 1 to April 30; on select routes outside mountain passes and high-snowfall areas the requirement ends March 31. (Government of BC)
• Quebec: vehicles registered in Quebec need winter tires December 1 to March 15. Vehicles registered outside Quebec are exempt. (Québec.ca)

Which tires count

Look at the sidewall. Tires marked with the three-peak mountain snowflake symbol meet a specific snow-traction performance requirement, and Alberta’s guidance notes that all-weather tires can carry the same symbol. (Alberta.ca)

BC’s legal definition is wider: a tire marked M+S or with the mountain snowflake counts on its designated highways, and it must have at least 3.5 mm of tread. Parks Canada’s Banff page likewise says to look for the snowflake or “M+S” symbol. (Government of BC)

When to switch

With no legal date in Alberta, go by temperature. Michelin Canada advises switching when daily temperatures consistently drop below 7°C, and cites the Alberta Motor Association recommending the swap when the weather hits 7°C. (Michelin Canada)

Shops fill up with the first cold snap. Booking a week or two before it is the easy way to get the time you want.

A changeover checklist

1. Check the tread on every tire before it goes on. On BC’s designated highways a winter tire needs at least 3.5 mm.
2. Tighten the wheel nuts to the torque in your owner’s manual, and check them again after the first short drive.
3. Set the pressure cold, to the figure on the placard in the driver’s door frame — not the maximum printed on the sidewall.
4. Mark each tire’s position before storing the other set, cool and dry, so you can rotate them next season.
5. Write it down: date, odometer and which set went on.