Definition - What does Winter Tires mean?
Winter tires, or snow tires, are tires with a structure that is specifically designed to provide vehicle stability in colder weather, as well as harsh road conditions involving snow and ice. They are an alternative to snow chains, which can slow down speed and even damage road surfaces.
Winter tires are characterized by a specific tread design that consists of bigger gaps than those on summer tires. These gaps improve vehicle stability on snow and mud terrains. Some are fitted with small metal studs to increase traction on ice, but cannot be used within city limits. Tires designed for winter conditions can safely withstand temperatures below 7 °C (45 °F).
Safeopedia explains Winter Tires
Winter or snow tires are tires that are designed exclusively for use in colder weather, snowy and icy conditions. Their higher traction capabilities enhance vehicle mobility, stability and control in adverse weather to reduce the number of road-related accidents, which are the result of skidding.
Winter tires are suitable for a variety of surfaces, which include pavement (wet or dry), mud, ice, or snow. Their build boasts metal pins that protrude from the tire and reduce skidding and accidents on snow or ice-covered roads. The tread design of winter tires allows for snow to pass into the tread, where it compacts and provides resistance against slipping. For safety purposes, it is recommended that winter tires are fitted to all wheel positions, which includes duals, to improve vehicle mobility and control.