Quebec’s December 1 Deadline: BMW Winter Tire Sizes, Run-Flats and Wheel Packages Explained
Quebec’s December 1 Deadline: BMW Winter Tire Sizes, Run-Flats and Wheel Packages Explained
Posted on October 28, 2026
Every fall, the same question comes up in BMW service lanes across Quebec: when do the winter tires have to go on, and which ones are right for my car? The short answer is December 1. The longer answer involves tire sizes, run-flat technology and the choice between swapping tires on your current wheels or buying a dedicated winter wheel set.
This guide walks through all of it in plain language. You will learn what the Société de l’assurance automobile du Québec (SAAQ) requires, how to read the markings on a tire, why your BMW’s wheel size sets the tire size, and what a winter wheel package actually is.
What Quebec’s Winter Tire Rule Requires
Quebec’s Highway Safety Code makes winter tires mandatory from December 1 to March 15 inclusive. The rule covers all motorized road vehicles registered in Quebec, including rental passenger vehicles. Your vehicle must carry four winter tires that meet the standard and are in good condition.
Drivers who skip the switch during the mandatory period face a fine of $200 to $300, plus costs. The SAAQ also recommends installing winter tires before December 1, since cold weather and snow often arrive earlier. Studded tires follow a longer window and are authorized from October 15 to May 1 inclusive.
How to Tell If a Tire Counts as a Winter Tire
Since December 15, 2014, only two kinds of tires count as winter tires under the Highway Safety Code: studded tires, and tires that carry the official winter pictogram. That pictogram shows a mountain with a snowflake in the middle, moulded into the sidewall.
The sidewall also tells you the tire’s age. Look for the DOT identification number, which ends with a four-digit code. The first two digits give the week of production and the last two give the year. A tire marked 3613, for example, was made in the 36th week of 2013. Checking this code is a smart habit before reinstalling a set you have stored for a few seasons.
Your BMW’s Wheels Set the Tire Size
A tire size such as 245/50 R19 is a recipe. The first number is the tire’s width in millimetres, the second is the sidewall height as a percentage of that width, and the final number is the wheel diameter in inches. A winter tire has to match a size your BMW is built to accept, so the starting point is always the wheel on your car.
BMW fits different sizes across its lineup. A few standard sizes from BMW Canada specifications show how much they vary:
- BMW X1: 225/55 R18
- BMW X3 30 xDrive: 245/50 R19
- BMW iX: 235/60 R20
- BMW X7 xDrive40i: 285/45 R21
Optional wheels change the picture. The BMW X3 30 xDrive, for instance, rides on 19-inch alloy wheels as standard, with 20-inch and 21-inch packages offered as options. The size printed on your current tires, or on the placard in the driver’s door jamb, is the one to bring to your appointment.
Run-Flat Tires: What They Are and Why They Matter
A run-flat tire has a reinforced sidewall that supports the vehicle for a limited distance after a loss of air pressure. That lets you keep driving to a safe place or a service centre instead of stopping on the shoulder to change a tire.
Several BMW models leave the factory on run-flats. Every 2024 BMW X5 and X6 was fitted as standard with 20-inch wheels on all-season run-flat tires, and M60i versions came with 21-inch performance run-flats. Other models take a different approach: the BMW X1 M35i xDrive rides on 19-inch all-season non-run-flat tires.
That difference matters when you shop for winter tires. Winter tires are made in both run-flat and conventional designs, and the right choice depends on how your BMW was built and equipped. Your BMW service advisor can confirm which construction suits your model before you buy.
BMW also helps you keep an eye on pressure once the cold sets in. Tire pressure display is standard on current BMW models, and the BMW X7 adds a digital tire diagnosis function that uses a cloud-based algorithm to spot pressure loss early and send recommendations through the My BMW App.
Wheel Packages Explained
A winter wheel package is a complete set of four winter tires already mounted on their own wheels. Instead of having tires removed from and mounted onto your summer or all-season wheels twice a year, you simply swap one full set for the other.
Owners choose a dedicated winter set for a few practical reasons:
- Faster seasonal changeovers, since no tire mounting is needed
- Less wear on your primary wheels from winter salt and road grit
- Room to choose a winter wheel size that works for your model
When you price a package, ask about the wheel design, the tire brand and construction, and how the set will work with your BMW’s tire pressure display.
Timing Your Changeover
December 1 is the legal deadline, but the calendar is only half the story. Temperatures often dip below 7°C before December, and that is when winter compounds start to outperform all-season rubber. Booking your appointment in early November avoids the last-minute rush.
The same logic applies in spring. The Quebec government recommends waiting a few weeks after March 15 before reinstalling all-season or summer tires, since spring conditions can change quickly.
Key Takeaways
|
Topic |
What to Know |
|
Mandatory period |
December 1 to March 15 inclusive |
|
Tires required |
Four winter tires in good condition |
|
How to identify them |
Mountain-and-snowflake pictogram, or studded tires |
|
Fine |
$200 to $300, plus costs |
|
Tire size |
Set by your BMW’s wheel diameter and specification |
|
Run-flats |
Standard on some BMW models, such as the 2024 X5 and X6 |
|
Wheel package |
Four winter tires pre-mounted on dedicated wheels |
Learn More at BMW Laval
Choosing the right tires and wheels for your BMW is easier with a specialist beside you. Our service team can confirm your exact size, explain run-flat and conventional options, and walk you through wheel set choices for your model. Visit our team right here in Laval to learn more and book your appointment.