WHAT DOES THE THREE-PEAK MOUNTAIN SNOWFLAKE SYMBOL ON TIRES MEAN?
If you see this symbol on the sidewall of winter tires, it means they have been tested and proven capable of performing under extreme winter weather driving conditions.
It also means that specific sets of tires either meet or exceed the prerequisite capability requirements put in place by the U.S. Tire Manufacturers Association (USTMA) to determine whether a tire is fit for use in severe snow conditions. It is sometimes referred to as 3PMSF in shorthand, or "snowflake" tires.
USTMA's standards also brought out other designations for tire types. You might see the M+S designation in tire names, and it can sometimes be referred to as the "severe weather" or "Alpine" symbol.
The pictograph of the snowflake symbol within an outline of a mountain stays the same, however.
M + S TIRES VS. THREE-PEAK MOUNTAIN SNOWFLAKE SYMBOL TIRES
You'll find many tires with a large "M" and "S" stamped on their sidewalls. These M+S, M/S or even M&S ratings signify what is generally a manufacturer-determined mud and snow rating. They typically feature tire sipes that are designed to provide more grip in these kinds of conditions than other non-M+S rated tires.
You'll find that other tires besides winter tires might also feature this rating, such as all-terrain, all-weather and all-season types. They are acceptable to use when temperatures occasionally dip below freezing and where light snow flurries are uncommon. However, M+S-rated tires should not be considered for severe snow conditions.
Some tires that have been rigorously tested to excel in winter conditions may also have the M+S rating. However, keep in mind that this rating is not standardized like tires with the mountain snowflake symbol.
We do more to compare the M+S and the Three Peak Mountain Snowflake symbol elsewhere but essentially the Three Peak Mountain Snowflake symbol certifies that a tire is capable of handling extreme winter conditions. The M+S rating only designates that the tire has more traction than other non-M+S rated tires in snow and mud. We have tons of winter driving tips but first and foremost: when it comes to performance, traction and stopping distance, it's snowflake tires all the way.
Are you unsure which tire is best for you? Trust Treadwell, or intuitive tire buying guide that uses data such as driving style, region, commute and more to help you select the best option for you.
WHERE TO BUY TIRES WITH THE THREE-PEAK MOUNTAIN SNOWFLAKE SYMBOL
3PMSF tires can be found in any tire or auto shop. America's Tire carries quite a few and you can easily narrow your list when shopping online by checking the "Three-Peak Mountain Snowflake" quick filter. You will notice that snowflake tires tend to be all-terrain and snow tires specifically. We have our opinions on the best snow tires but you should choose the tire that best suits your driving needs and budget.
America's Tire can help you make the right tire-buying decision for you and your vehicle. Whether you need tires with a severe snow service rating or something a little lighter, we've got your back. Save some time and make an appointment. Get a shorter wait time in-store when you buy and book online! You can also call or drop by your local store and we'll get you taken care of!