Nokian Tyres is the largest tire manufacturer in the Nordic countries. The company develops and manufactures summer and winter tires for cars and tires for a range of heavy machinery. It is also the biggest retreading materials manufacturer and the biggest retreader in the Nordic countries. In addition, Nokian Tyres runs the Vianor tire chain with over 360 outlets across Finland, Sweden, Norway, Estonia, Latvia, Lithuania, Russia, Ukraine, Kazakstan, Switzerland and the US.. Some Vianor outlets operate on a franchising basis.