Snow tires, with their deeper treads, advance traction on snow and refrigerate. Some drivers deem that traction can be improved too by the cause of "studs," inadequate metal pins that stick absent beyond the tire surface. Studded tires became accepted day one in the 1960s. Else recently, they hold fallen elsewhere of favour due to advances in tread mannequin and, largely, the demonstrated destructive corollary of studs on plan surfaces.
States with No Restrictions
Seven states arrange not direct the account of studs. Of these, Wyoming, Colorado, Vermont and Original Hampshire are contents to far-reaching winters with substantial snow and solidify. Contemporary Mexico and North Carolina annex warmer climates on the other hand engage in practice hefty snow in mountainous areas. Drivers in the warm-weather states of Hawaii, Alabama, Florida, Louisiana and Mississippi have no need of them. In 4 other states that do experience hard winters, Minnesota, Wisconsin, Illinois and Texas (in its northern plains and western mountainous areas), studs were nevertheless made illegal so as to protect roads.
States Allowing Visitors to Use Studded Tires
Kentucky, despite few heavy snowfalls, does allow studs.
States that Prohibit Studded Tires
Nine states allow no use of tire studs whatsoever.Wisconsin allows out-of-state cars to use studs for not more than 30 consecutive days. Minnesota allows non-resident students and workers to use studded tires.
Prohibition Only in Certain Counties
One state, Maryland, bans tire studs except in 5 mountainous counties where heavy snowfall and steep grades can make for difficult driving conditions. Tire studs are allowed in those counties only in the colder months.
States with Special Restrictions
Nebraska allows seasonal use of studded tires with a special permit. South Carolina permits their use for snow and ice, but studs are limited to 1/16-inch in length. Georgia allows studs only in snowy conditions, which would necessitate frequent tire or vehicle changes.
States with Purely Seasonal Restrictions
All the remaining states permit the use of studded snow tires only between certain dates, typically from October or November until mid-April. Of these, Alaska and Michigan allow longer use of studded tires in specified northern regions.
