The continental nordic spike 700c tyre is a studded bike tyre thatrsquos ideal for use on the road when you want extra grip in snow and ice these winter bike tyres are available with 120 or 240 studs of hardened so you can get out and about on your bike even in the worst winter weather continental nordic spike 700c tyre features the studded bike tyre is officially approved for road use hardened steel studs make it possible to ride through ice and snow 120 or 240 stud options 3 ply 6