02-07-2007, 03:42 AM
Actually, to me, the tread on one side looks like the opposite of the other side, thus it is bidirectional

Edit:
Graspic DS-2 studless winter tires feature a glass fiber-reinforced, high silica tread compound molded into a heavily zigzag siped, low void, symmetric tread design with a wide, central snow pillar groove to provide traction on ice and in snow without resorting to traditional metal studs.

Edit:
Graspic DS-2 studless winter tires feature a glass fiber-reinforced, high silica tread compound molded into a heavily zigzag siped, low void, symmetric tread design with a wide, central snow pillar groove to provide traction on ice and in snow without resorting to traditional metal studs.