In Laval for over 15 years, one repair at a time

Every autumn, the same scene plays out in garages across Quebec. By late November, everyone calls at once, and some customers find out at the counter that their tires from last year won't make it through the season.

The deadline is fixed and known in advance. What varies is everything else: the condition of your battery, your windshield wipers, and the actual tread depth. Here is what the law says and what you need to check before the first deep freeze.

The 5 key points

• Winter tires are mandatory from December 1 to March 15 on all motor vehicles registered in Quebec, including rentals.
• Fines range from $200 to $300. There are no demerit points associated with this.
• A compliant tire must feature the mountain-snowflake symbol or be equipped with studs. The M+S marking alone is no longer sufficient.
• The legal minimum tread depth is 1.6 mm, but the recommendation for winter is at least 4.8 mm.
• Batteries, windshield wipers, and fluids often fail during the first severe cold snap. Changing your tires is the perfect time to have them checked.

The dates: December 1 to March 15

Your vehicle must be equipped for winter from December 1 until March 15. This requirement applies to all motor vehicles registered in Quebec, including rentals. Exemptions include trailers, vehicles registered outside Quebec, heavy vehicles, tool vehicles, farm machinery, and motor homes.

Drivers who fail to comply face a fine of $200 to $300. A police officer can issue this ticket on December 1, even on dry, sunny roads, because the date itself triggers the requirement.

Some situations qualify for a grace period : the seven days following a purchase from a dealer, the seven days before the end of a lease of one year or more, and for removable plates and temporary registrations. The SAAQ also issues a seven-day exemption certificate, requested via SAAQclic, for specific cases such as moving out of Quebec or putting a vehicle back on the road. Quebec's mandate remains an exception in Canada: elsewhere, requirements vary by province and sometimes by the road being traveled.

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Which tires are compliant, and the minimum tread depth

A tire designed for winter driving must bear the three-peak mountain snowflake symbol or be equipped with studs. Retreaded or remolded tires for passenger vehicles must meet the same requirement. As of December 15, 2014, the M+S marking alone is no longer recognized.

Regarding wear, the law sets a minimum tread depth of 1.6 mm. However, the government recommends at least 4.8 mm for winter, and it is within this gap that your braking distance is determined. At 2 mm, a tire will still pass a police inspection but will struggle on the first snowy hill.

The 25-cent coin test remains the simplest method. Place it in a groove with the caribou's nose pointing toward the bottom. If you can see the snout, traction in deep snow will be poor. Check several spots across the width, as uneven wear often indicates an alignment or pressure issue.

A tire's age is just as important as its wear. The SAAQ notes that a tire over five years old begins to lose its effectiveness as the rubber hardens and cracks, making a seven-year-old tire questionable even with deep tread.

Why install tires before the deadline

The law says December 1st, but the first snowfalls often arrive in November. The real performance threshold is actually around 7 °C: below this temperature, the rubber on all-season tires hardens and loses grip, even on dry pavement.

The practical reason is just as important. Repair shops pack weeks of work into the last two weeks of November. Booking early gives you your choice of time slots and leaves time to order parts if an inspection reveals a problem.

According to the government, some winter tires in good condition reduce braking distance by 25% and maintain their elasticity down to -40°C. That is the difference between stopping in time and hitting the bumper in front of you.

Battery: the cold reveals what summer hid

A weak battery goes unnoticed all summer. The engine starts easily when warm, the oil is fluid, and the power demand remains low. Then comes the first night at -20°C: the oil thickens, the starter works harder, and the battery must provide more current at the exact moment the cold reduces its capacity. It usually gives out right there, on a weekday morning in a parking lot.

The test takes a few minutes. A device measures the actual capacity of the battery and compares it to its rated value, indicating whether it will make it through the winter. The same check covers the alternator and terminals, where simple corrosion sometimes explains a sluggish start.

Brakes, wipers, fluids: the pre-season check

Salt and slush attack braking components faster than summer dust. Calipers seize, parking brake cables get stuck, and corrosion builds up on the rotors. Brakes that pull to one side or a vibrating pedal deserve a diagnosis before December rather than in January.

Next are the wipers, the most neglected item on the list and the most critical for visibility. A blade that leaves streaks in October will be useless the moment the first slush is sprayed by a truck on the highway.

Finally, the fluids. Windshield washer fluid must be a winter formula resistant to freezing, and the reservoir should be full before the first storm, as it can empty in a single trip from Laval to Quebec City in bad weather. Antifreeze is measured with a refractometer, which provides its actual concentration and the temperature at which it will freeze. Oil should follow the interval and viscosity specified in the owner's manual for the cold season.

The four-wheel-drive myth

All-wheel drive helps you get moving in the snow. It sends torque to all four wheels, pulling a car out of a snowbank or climbing a slippery hill where a rear-wheel-drive vehicle would just spin its tires.

It does absolutely nothing for braking. A four-wheel-drive vehicle stops exactly like any other, because braking depends on the grip of all four tires on the road. The same applies to cornering. Confusing the ability to accelerate with the ability to stop remains the most common mistake among SUV owners, and it is best addressed with four good tires rather than the drivetrain.

What we inspect during a tire change

The vehicle is already on the lift, the wheels are off, and the labor for the removal is already paid for. It is the most cost-effective time of the year to take a look underneath.

• Brake pad thickness and rotor condition, which are visible without any extra disassembly
• Suspension and steering components: shocks, bushings, tie rod ends, and ball joints
• Leaks under the vehicle, which are often invisible otherwise
• Corrosion on brake lines and the exhaust system, which is accelerated by road salt
• Wear on the tires being removed, which can reveal an issue withalignment or tire pressure

Wear on the edges, in the center, or in a saw-tooth pattern: each wear pattern points to a different cause. In fact, wheel alignment should be checked annually according to manufacturer recommendations. A tire change is the logical time to have it done.

FAQ

What are the exact dates for the winter tire mandate in Quebec? From December 1st to March 15th inclusive, for all motorized road vehicles registered in Quebec, including rentals.

Can you drive with winter tires in the summer in Quebec? It is permitted, but not recommended. The government highlights three risks: heat deteriorates the rubber and increases the risk of a blowout, water evacuation is less efficient making hydroplaning more likely, and braking distances can exceed those of all-season tires on wet pavement.

What types of tires are authorized, studded or otherwise? Both. A compliant tire features the mountain-snowflake symbol or is equipped with studs. Studs are permitted from October 15 to May 1 for passenger vehicles, taxis, and commercial vehicles with a total loaded weight not exceeding 3,000 kg.

What are the penalties for non-compliance? A fine of $200 to $300, with no demerit points.

What is the required tread depth? Never less than 1.6 mm; that is the legal limit. For winter, the official recommendation is at least 4.8 mm.

Are there specific recommendations for highway driving? The rules are the same everywhere, but speed amplifies everything. On the highway, increase your following distance and slow down when the road is snow-covered. Compliant tires are no substitute for careful driving.

Do I need four winter tires, or are two enough? Four. The regulations apply to all tires on the vehicle, and having winter tires on only one axle creates an imbalance in grip that makes the vehicle unpredictable when cornering and braking.

Can I wait until March 15 to put my summer tires back on? You can, but the government recommends waiting a few more weeks, as spring conditions can be unpredictable.

Book your appointment before the November rush

MDF Mécanique installs your winter tires in Laval, along with a complimentary inspection of your brakes, suspension, battery, and fluids. Since the vehicle is already on the lift, it’s the perfect time to check them.

Book early in November to get your preferred time slot. Call us at 514-706-6444 or fill out the form.

Tires and Alignment • Preventive Maintenance