Nokian IceSpeed 700 x 40mm 100 Studs Wire Bead All Black. Nokian IceSpeed 700 x 35mm 100 Studs Wire Bead All Black. The Nokian IceSpeed winter tires feature steel studs with carbide pins for incredible traction on snow and ice. Nokian's final stage in production shrinks the rubber around the studs. 100 steel studs with carbide pins ! Non-toxic 58a winter rubber tread compound provides excellent grip on snow and ice. It is not uncommon to lose 5-10 studs during normal use due to friction. This does not affect performance and is not considered a defect for warranty claims. WE DO SELL THE REPLACEMENT STUDS & INSTALLATION TOOL.