All-season vs. all-weather vs. winter tires: what's the difference?

All-season tires are made for mild weather, and their rubber hardens below about 7°C. Winter tires stay soft and grippy deep into the cold. All-weather tires sit in between. They carry the same three-peak mountain snowflake symbol as winter tires, and you can leave them on all year. The right pick depends on how and when you drive between November and March.

1. Look for the snowflake on the sidewall

Most all-season tires carry an M+S mark, for mud and snow. Manufacturers apply it based on the shape of the tread, and there's no cold-weather test behind it.

The three-peak mountain snowflake works differently. A tire only earns it by passing a standardized traction test on packed snow against a reference tire. Winter tires carry it, and so does every true all-weather.

M+S describes a tread pattern. The snowflake means the tire passed a test.

2. The rubber decides the grip

All-season compounds are built to handle summer heat, and they stiffen once the air drops below about 7°C. A stiff tire grips less, so braking distances grow even on dry pavement.

Winter compounds stay flexible far below freezing, and the tread is cut with dense rows of small slits, called sipes, that bite into snow and ice. All-weather tires use a compound between the two, soft enough for January and firm enough to survive July.

3. Stopping distance is where you feel it

The Tire and Rubber Association of Canada, citing research from the Traffic Injury Research Foundation, puts winter tire stopping distances at up to 30 percent shorter than all-seasons just below freezing. On a slick morning on the 403, that's the gap between stopping behind the car ahead and sliding into it.

All-weathers land closer to winter tires than to all-seasons in snow. On glare ice and in deep cold, a dedicated winter tire still has the edge.

4. How long each set lasts

Winter tires wear quickly on hot summer pavement, which is why they come off in the spring. With two sets, each one works half the year, so both last longer.

All-weathers carry every kilometre on one set. Expect to replace them sooner than either set in a two-set setup.

5. What it means for changeovers and insurance

All-weathers stay on through every season, so there's no changeover and no storage. Winter tires mean two swaps a year, $79 each when both sets are on rims.

Insurance varies. Some Ontario insurers count all-weathers with the snowflake symbol for the winter tire discount and some only accept dedicated winter tires, so ask before you buy.

Which one we'd pick

Winter tires, if either of these sounds like you:

• You drive the 403 or the rural roads outside the city, early and in any weather.
• Staying home on the worst days isn't an option.

All-weathers, if you mostly drive in town and can wait out a storm. They're a real step up from all-seasons, and they save you two appointments a year.

All-seasons through a Brantford winter? We'd pass. They make a fine summer tire and a poor January one.

If all-weathers fit how you drive, you may not need a changeover from us at all, and we'll say so. When they wear out, we'll install the next set in your driveway.

Next time you're out at the car, look for the snowflake on the sidewall. If you only find M+S, you're on all-seasons, and November is coming.

Last updated: September 2026