Winter tires in Calgary: when to switch, what it costs, storage
When the weather says to change over, what the law does and does not require, what shops charge, and where the other set goes.
In a typical Calgary year the daily mean temperature falls to 7 °C around October 7 and rises above it again around April 30, in Environment and Climate Change Canada’s 1991–2020 normals for Calgary (Airport). Alberta doesn’t require winter tires; some mountain highways west of the city require them or chains from October or November. Sources checked .
- Winter tires on
- October 7
- Summer tires back on
- April 30
When should I put winter tires on in Calgary?
The rule of thumb comes from how rubber behaves in the cold. Transport Canada says that below 7 °C all-season and summer tires begin to lose elasticity, leading to less traction, while winter tires keep their grip at much lower temperatures. The Tire and Rubber Association of Canada puts it the other way round: at 7 °C or lower, winter tires outperform all-season and summer tires, which start to harden.
A threshold needs a date to be useful. Environment and Climate Change Canada’s climate normals for 1991–2020 at Calgary (Airport) give the average daily temperature for each month. Placing each month’s mean at the middle of the month and joining the months with straight lines, the typical day falls to 7 °C on October 7 and rises above it again on April 30: 205 days, or about 7 months, on winter tires. The months either side of each switch:
| Month | Daily mean | Daily high | Daily low | Snowfall |
|---|---|---|---|---|
| September | 11.5 | 18.3 | 4.7 | 2.2 |
| October | 4.9 | 11.1 | −1.3 | 11.5 |
| November | −1.7 | 4.1 | −7.5 | 18.8 |
| March | −2.2 | 3.8 | −8.1 | 23.8 |
| April | 4.5 | 10.8 | −1.9 | 22.9 |
| May | 9.9 | 16.4 | 3.4 | 9.6 |
The table shows why October is the month to act. September still averages 11.5 °C; October averages 4.9 °C, with a normal daily low of −1.3 °C. The station is the only one in the area with 1991–2020 normals, so the same dates stand for Airdrie, Chestermere and Okotoks, and each has its own page with that town’s forecast: Calgary, Airdrie, Chestermere, Okotoks.
Watch the forecast, not only the calendar
A normal is an average over thirty years, and Calgary’s autumns are not average. The same station’s normals put the average first fall frost on September 18 and the average first fall snowfall on October 3, before the mean reaches 7 °C, and October averages 11.5 cm of snow. Frost and snow before the switch date are part of a typical year, not a surprise.
So use the date to plan and the forecast to decide. The Calgary winter tire tool shows ECCC’s forecast for the coming week and marks each day whose mean is at or below 7 °C. Once those days start to line up, the switch is due, whatever the date.
Switching back in spring
The normals put the daily mean back above 7 °C around April 30, but spring snow runs late here. April averages 22.9 cm of snowfall at the airport, more than any month except March, the average last spring snowfall is May 8, and the average last spring frost is May 21. Tires changed in April can still meet a snowfall. Leaving them on has a cost too: Alberta Transportation notes that winter tires wear faster in summer than all-weather tires do. Again, the forecast is a better guide than the date.
Are winter tires mandatory in Alberta?
No. Alberta Transportation says the province has not mandated winter tires, and recommends four winter or all-weather tires for driving in severe winter conditions. The rules that do apply to a Calgary driver are on the roads west of the city and in other provinces:
- Alberta
- Winter tires are not required by law. Alberta Transportation recommends four winter or all-weather tires for driving in severe winter conditions. Source: Alberta Transportation
- Banff, Yoho and Kootenay national parks
- Snow tires or chains are required on the Icefields Parkway (Hwy 93N) and on Hwy 93S in Banff National Park from November 1 to March 31, and on the Trans-Canada (Hwy 1) through Yoho and Hwy 93S through Kootenay from October 1 to April 30, or whenever those roads are snow- or ice-covered. Parks Canada accepts the snowflake or the M+S symbol. Source: Parks Canada
- British Columbia
- Winter tires or chains are required on most signed routes from October 1 to April 30; on some routes outside the mountain passes the requirement ends March 31. BC accepts the M+S marking as the legal minimum, with at least 3.5 mm of tread. Source: Government of British Columbia, Government of British Columbia
- Quebec
- Vehicles registered in Quebec, heavy vehicles and farm machinery aside, must have winter tires from December 1 to March 15 inclusive, and only tires with the three-peak mountain snowflake symbol, or studded tires, count. Source: Tire and Rubber Association of Canada
The mountain parks and British Columbia accept the M+S marking; Quebec does not. A driver who crosses the Rockies in winter is covered everywhere on that list by tires with the mountain snowflake symbol and at least 3.5 mm of tread.
Winter, all-weather or all-season: read the sidewall
Two markings matter. The three-peak mountain snowflake symbol, in Transport Canada’s words, marks tires that “meet specific snow traction performance requirements and have been designed specifically for use in severe snow conditions”. M+S (mud and snow) is what all-season tires carry, and the Tire and Rubber Association of Canada says those do not meet the snow traction requirements to be considered winter tires.
All-weather tires sit between the two. Alberta Transportation describes them as having softer compounds that let them carry the mountain snowflake symbol, while not wearing as quickly in summer as a winter tire would. Fitted all year, they do away with the changeover.
Whichever you choose, Transport Canada advises installing winter tires as a set of four, not using tires worn close to 4 mm of tread on snow-covered roads, and putting the best pair on the rear. Cold also lowers pressure: TRAC says tires can lose one psi for every 5 °C drop, and advises a monthly check with a gauge in the cold months.
How much does a tire changeover cost in Calgary?
The biggest difference in price is whether your winter tires have their own rims. With two sets of wheels, a changeover is a wheel swap: four wheels off and four on. With one set of rims, the shop dismounts one set of tires, mounts the other and balances them, twice a year. Here is what shops in the directory post on their own websites:
| Shop | Swap on rims | Off rims (dismount and remount) | Source |
|---|---|---|---|
| Darcy’s AutoServices | $40 | $80, balancing included | Shop’s price list |
| R&A Car Care Center | $40 | Not posted | Shop’s price list |
| Raybern Motors Balancing listed separately, $65 + GST. | $65 + GST | $130 + GST | Shop’s price list |
| Gizmo’s Garage Mobile. | $70 | Not posted | Shop’s price list |
| TireSwaps Mobile: done at your home or office. | $109 | Not posted | Shop’s price list |
Copied as each shop words it: “+ GST” means GST is extra, and a price without it is one whose page does not say. None of these pages gives a season or a date, so confirm the price with the shop; your car, its wheel size and its tire pressure sensors can change it, which is why a price for your car comes as a quote.
Ask whether the price includes balancing and tire pressure sensor resets, and whether the shop charges more for large wheels. For your own car, the quickest way to compare is to send one request: describe the car and the job once, and local tire shops reply with their own prices.
Get changeover quotes from 121 tire shops in Calgary
Describe the job once. Local shops reply with their own prices.
Storing the other set
The Tire and Rubber Association of Canada’s advice is to store tires upright and indoors, out of direct sunlight and strong artificial light, and away from heat, electric motors (which make ozone) and hydrocarbons. If they are stored on their rims, lower the pressure to about 15 psi to avoid cracking or deformation.
An indoor spot such as a garage or basement fits that advice. If you have no room, some shops offer seasonal tire storage; ask when you request quotes, and ask what happens to your tires if you move to another shop next season.
Booking the changeover
- Check the forecast on the Calgary tool from the end of September.
- Say whether your winter tires are on rims, the wheel size, and whether the car has tire pressure sensors: any of them can change the price.
- Check the tread before the first snow; Transport Canada’s line is 4 mm for snow-covered roads.
- Keep the wheel lock key in the car if your wheels use one.
- Compare prices from the 121 tire shops listed in Calgary, or send one request and let them reply.