What is 3PMSF marking?
3PMSF (Three Peak Mountain Snowflake) is a symbol on the tyre sidewall depicting a mountain with three peaks and a snowflake inside. It is the official winter tyre certification.

3PMSF (Three Peak Mountain Snowflake) symbol
Why is 3PMSF important?
The 3PMSF marking guarantees that the tyre:
- Has been laboratory tested according to strict standards (ASTM E1136-14)
- Provides at least 10% better traction on snow than a standard all-season tyre
- Maintains flexibility at low temperatures (below +7°C / 45°F)
- Ensures safe braking on snow and ice
3PMSF vs M+S – what's the difference?
| Feature | M+S | 3PMSF |
|---|---|---|
| Testing | No mandatory testing | Laboratory certified |
| Snow traction guarantee | No | Yes (+10% vs standard) |
| Rubber flexibility in cold | Not guaranteed | Guaranteed |
| European standard | Old, becoming insufficient | New standard |
Why M+S is no longer enough?
M+S (Mud and Snow) is an old marking from the 1970s, based only on tread pattern design. It doesn't guarantee actual winter performance – manufacturers can apply this mark without any testing.
⚠️ Baltic countries requirements
Lithuania: During winter season (November 10 – April 1), both M+S and 3PMSF tyres are accepted, but 3PMSF is recommended.
Latvia: SINCE OCTOBER 2024 – ONLY 3PMSF!
In Latvia, M+S marking is NO LONGER SUFFICIENT. Only tyres with the 3PMSF symbol are mandatory!
Estonia: SINCE DECEMBER 2022 – STUDLESS TIRES REQUIRE 3PMSF!
In Estonia, during winter season (December 1 – March 1), studless winter tyres MUST have the 3PMSF marking (since 2022). Studded tyres do not require 3PMSF marking.
Recommendation
When buying new winter tyres, always choose ones with 3PMSF marking. This guarantees true winter protection and compliance with all European countries' requirements.