Switzerland has some of the most specific winter tire regulations in Europe. Unlike neighboring Germany or Austria, there is no strict, calendar-based obligation to use them in Switzerland. The responsibility rests entirely with the driver.
General rule in Switzerland:
Situational Obligation
No specific dates, but the driver must ensure full vehicle control in all conditions.
Are winter tires mandatory?
Formally – no. Practically – yes. If you drive on a snowy road with summer tires, you are breaking the law because your car does not ensure the safety of road users.
Technical Requirements – Standards 2026
1. Tread Depth – Recommended 4 mm
The legal minimum is 1.6 mm, however, the police and the TCS organization explicitly state that a tread depth of less than 4 mm is considered an aggravating circumstance.
2. Tire Markings (3PMSF)
Tires with the snowflake symbol (3PMSF) are considered full-fledged winter tires.
| Element | Regulation / Recommendation | Consequence |
|---|---|---|
| Period | None (recommended X-IV) | Risk of fine in snow |
| Min. Tread | 1.6 mm (recommended 4 mm) | Loss of insurance |
| Chains | Mandatory with sign | Fine approx. 100 CHF |