All-season, All-weather, and Winter Tires Explained

All-weather tires are the middle option. They carry the same mountain snowflake symbol as dedicated winter tires, so they stay on year-round and satisfy Quebec’s winter tire law, but they stop longer on ice.

All-season tires are really three-season tires. Winter tires give the best grip in snow, slush, and cold below 7°C, and they’re still our pick for most of Canada.

Key Takeaways

• Below 7°C, winter tires grip better than all-season tires, even on dry pavement, because their rubber compound stays soft.
• All-weather tires carry the three-peak mountain snowflake symbol, which makes them legal winter tires in Quebec from December 1 to March 15.
• M+S (mud and snow) all-season tires meet B.C.’s designated-highway requirements, but not Quebec’s.
• All-weather tires suit mild, wet winters like the Lower Mainland’s. For heavy snow, icy roads or long highway trips, winter tires are safer.
• From October 1, 2026, Manitoba’s Winter Tire Program stops financing all-weather tires, and Ontario insurers decide for themselves whether all-weathers earn the winter discount.

Winter Tires vs All-Weather vs All-Season: Side-by-Side

Tire type	Sidewall marking	Works best	Snow and ice	Year-round use	Legal in Quebec winter	Best suited for
All-season tires	M+S (mud and snow), usually	Above 7°C	Light snow only; weak on ice	Three seasons, realistically	No	Drivers who swap to winter tires for the cold months
All-weather tires	Three-peak mountain snowflake, plus M+S	Mild winters and warm summers	Good in snow and slush; weaker braking on ice	Yes, one set	Yes	Mild, wet winters and short urban trips
Winter tires	Three-peak mountain snowflake	Below 7°C	Best traction on snow, slush, and ice	No; wear fast in heat	Yes	Harsh winters, highways, rural and mountain driving

The 7°C Line and Why Rubber Compound Matters

The rubber compound in summer tires doesn’t get too soft in hot weather, while winter rubber doesn’t get hard in the cold. All-season compound covers a wider range but isn’t as effective at the extremes.

Seven degrees Celsius is the line. Below 7°C, winter tires grip better, even on dry pavement. All-weather compound stays flexible in freezing temperatures without melting away on a July highway.

Mountain Snowflake vs M+S: What the Sidewall Tells You

The mountain snowflake symbol is a test result. Under Transport Canada’s winter tire standard, a winter tire must score a traction index of at least 110 on medium-packed snow against a reference tire. That’s 10 percent better, not 110 percent.

“Mud + Snow” (M+S) tires are all-seasons. M+S describes tread geometry; no snow-traction test stands behind it.

Our winter tire terms guide decodes the rest.

All-Season Tires Are Really Three-Season Tires

Despite the name, winter isn’t their time to shine.

How All-Season Grip Fades in the Cold

All-season tires split the difference between winter and summer tires. They handle wet roads and dry roads well. In the cold, though, the compound stiffens. Winter tires also have a tread pattern that bites into snow and clears slush. An all-season can’t match either.

Pros and Cons of All-Seasons

The benefit is that all-seasons stay on all year: no second set to buy, install, and store. They cost less up front, too.

Their major downfall is that they simply aren’t as good as winter tires when the weather turns sour.

We put the two head-to-head in our article comparing winter tires with all-seasons, new and used.

Should You Use All-Season Tires Year-Round in Canada?

Unless you live in a moderate-and-dry-winter part of Canada, which doesn’t include very much of it, treat all-seasons as “three-season” tires.

Throw in slush and snow, early darkness, and other drivers who aren’t good at handling winter, and you want every advantage you can get. That means winter tires or all-weather tires.

Dedicated Winter Tires: The Safety Benchmark in Snow and Slush

Dedicated winter tires are the benchmark every other tire gets measured against in the cold.

How Snow Tires Bite: Sipes, Tread Blocks and Soft Compound

They’re not “snow tires”; they’re designed for cold weather that can be dry, snowy, or rainy. Deep tread blocks bite into packed snow and channel away slush. Lots of sipes (the tiny slits in the tread) improve grip and help prevent hydroplaning, when the tire “floats” on a puddle instead of reaching the asphalt.

Some have aggressive tread for deep snow; others take studs where studded tires are permitted. On black ice, look for the ice grip symbol too.

Winter Tire Pros and Cons: Insurance Discounts, Rims and TPMS

The biggest benefit is performance. Even with all-wheel drive, winter tires improve handling and stability and cut braking distances. Ontario insurers offer an insurance discount.

The disadvantage is two sets of tires to buy and store. Get a second set of rims, too, and with a “direct” TPMS you’ll need four more sensors.

Should you use them? We say, “Yes, you should!”

Quebec and British Columbia Winter Tire Requirements

Two provinces make winter-rated tires mandatory:

• Quebec requires mountain snowflake or studded tires on every registered vehicle from December 1 to March 15. The Gouvernement du Québec’s winter tire requirements set a $200 to $300 fine.
• British Columbia works by highway. Designated routes require winter tires from October 1 to March 31, or April 30 on mountain passes. B.C. accepts M+S or the mountain snowflake, with at least 3.5 mm of tread. Check the B.C. winter tire and chain routes before any trip outside the Lower Mainland.

All-Weather Tires: The Year-Round Middle Ground

All-weather tires are basically all-seasons with better winter performance.

What Makes an All-Weather Tire Different

An all-weather tire handles warmer weather, but its compound and tread lean further toward winter than an all-season’s. It carries the three-peak mountain snowflake logo, which qualifies it under Quebec and B.C. requirements. More tire manufacturers now build all-weather tires, and most handle snow and standing water well.

All-Weather Trade-Offs: Braking, Tread Life and Warranty

All-weather tires aren’t as effective as dedicated winter tires, especially for braking on ice. CAA-Québec’s all-weather tire advice points out the snowflake is earned in snow, not on ice.

Wear is the other catch. Softer compound means shorter tread life and a shorter tread-wear warranty.

For a real-world look, read the wrap-up of our long-term all-weather tire test.

Who Should Buy All-Weathers: Lower Mainland Yes, Whitehorse No

All-weathers suit areas without much snow, ice, or deep cold. Think Toronto or B.C.’s Lower Mainland, not Whitehorse (or, for that matter, frequent trips to skiing or cottage country).

Winter tires are still better, but if you’re dead-set against buying and installing them, then we suggest using all-weather.

Not sure? Read whether all-weather tires are a good winter solution.

Shop Used Cars for Winter Driving on AutoTrader.ca

Filter used listings by body type and price to find one that’s ready for the cold. Ask the seller whether a winter set comes with the car.

Browse Used Cars

Seasonal Changeover Checklist: From Summer Tires to Winter

Condition is everything. A new all-season tire will perform better than a worn-out winter tire.

Tread Depth, Sidewall Cracks and Tire Condition

Run through this before the first snow:

1. Measure tread depth: Quebec’s legal minimum is 1.6 mm, with 4.8 mm recommended for winter. Here’s how to check your tire’s tread depth with a coin.
2. Look for cracks or bulges in the sidewall. Either one means replacement, not repair.
3. Check the date code: rubber hardens with age.
4. Confirm the markings match where you drive: mountain snowflake for Quebec, M+S or better for B.C. highways.

Swap Timing, Storage and Tire Pressure

Remove winter tires promptly in spring; warm pavement eats soft compound. Here’s when to take off your winter tires.

No room? Many tire shops offer storage for a nominal fee. Otherwise, here’s how to store winter tires at home. Recheck pressure after every cold snap.

Selling a Car With a Second Set of Rims? Check Its Value

A mounted winter set is a real selling point. Mention it in your ad and see what your car is worth first.

Get My Free Valuation

All-Season vs All-Weather Tires: Our Verdict by Region

For most of Canada, the answer is still a dedicated winter set.

Pick by Climate and Commute: Toronto, Vancouver, Montreal and the Prairies

• Vancouver gets far more rain than snow, so all-weather tires make sense there.
• Toronto sits on the line.
• In Montreal, winter-rated tires are the law, and winter tires are the safer way to meet it.
• On the Prairies, in the North and on any mountain pass, harsh winters and extreme cold favour winter tires every time.

The right tire is the one that matches your worst winter day, not your average one.

Check Safety and Specs by Trim in the AutoTrader Research Hub

Shopping for your next winter commuter? Look up trims, drivetrains, and specs before you buy.

Explore the Research Hub

Year-Round Tire FAQ: What Canadian Drivers Ask

Are All-Weather Tires Legal in Quebec From December 1 to March 15?

Yes. Quebec accepts any tire with the three-peak mountain snowflake pictogram, and all-weather tires carry it. The rule covers every Quebec-registered vehicle, rentals included (with a few exceptions).

All-season tires without the pictogram don’t qualify, even if they’re marked M+S, and non-compliance carries a $200 to $300 fine.

Do M+S All-Season Tires Count on B.C. Mountain Passes?

Yes. On B.C.’s designated highways, an M+S tire with at least 3.5 mm of tread is legal on mountain passes from October 1 to April 30.

Legal isn’t the same as good. M+S describes tread shape, not tested snow grip, so a 3PMSF all-weather or winter tire is safer on the Coquihalla.

Do All-Weather Tires Get the Ontario Winter Tire Insurance Discount?

Sometimes. The Financial Services Regulatory Authority of Ontario says all Ontario insurers offer a winter tire insurance discount and tells drivers to ask how to qualify. Each insurer writes its own rules, though, and some only credit dedicated winter tires.

Ask your insurer before you buy, and keep the installation receipt.

Are All-Weather Tires Good on Black Ice?

They’re better than all-season tires, but not as good as winter tires. The mountain snowflake test measures traction on packed snow, not ice, which is why CAA-Québec doesn’t recommend all-weather tires for Quebec winters.

For ice, look for the ice grip symbol, which only some dedicated winter tires carry, and leave extra following distance.

Do I Need Winter Tires if I Have All-Wheel Drive?

Yes. All-wheel drive helps you accelerate, but tires do the stopping and steering on snow and ice. Short version: AWD won’t stop you sooner. B.C.’s highway rule applies to two-wheel, all-wheel, and four-wheel drive alike.

We made the full case in our article on why all-wheel drive isn’t an excuse to skip winter tires.

When Should I Put Winter Tires On?

Install them once daytime temperatures stay below 7°C, often late October in much of Canada. The legal dates (October 1 on B.C. highways, December 1 in Quebec) are deadlines, not the start of the cold.

Book early, because tire shops fill up fast after the first snowfall. Check your insurer’s discount window.

What Does 3PMSF Mean on a Tire?

3PMSF stands for three-peak mountain snowflake. The symbol means the tire passed a standardized snow-traction test and scored at least 10 percent better than a reference tire, under Transport Canada’s rules.

Winter tires and all-weather tires carry it; all-season tires don’t. It’s the symbol Quebec’s winter tire law looks for.

Can I Leave Winter Tires On All Year?

You can, but you shouldn’t. The soft compound that grips at −20°C wears quickly on hot pavement and costs some fuel economy and handling.

Swap once temperatures stay above 7°C and your winter set lasts more seasons. A second set on its own rims makes each spring swap faster and cheaper.

Do Winter Tires Need Their Own TPMS Sensors?

If your car uses direct TPMS, yes. Direct systems read a sensor inside each wheel, so a winter set on separate rims needs four sensors, or the warning light stays on. Indirect systems use the ABS wheel-speed sensors and just need a reset.

Cold also drops pressure, so avoid these common tire pressure mistakes.

Does Manitoba Help Drivers Pay for Winter Tires?

Yes. The Manitoba Public Insurance Winter Tire Program finances up to $2,000 per vehicle at prime plus two percent, over one to four years, including rims and TPMS.

From October 1, 2026, it only covers mountain snowflake tires marketed solely for winter. All-weather, all-season, four-season, and year-round tires no longer qualify.

Sources:

Accessed September 22, 2026

• Transport Canada, Winter Tires
• Gouvernement du Québec, Requirements for Winter Tires
• Province of B.C., Winter Tire and Chain Routes
• CAA-Québec (January 2026)
• FSRA, How to Save on Auto Insurance
• Manitoba Public Insurance, Winter Tire Program

Ready for winter? Find your next car on AutoTrader.ca, with the right tires already on it.