Gravity arc tread design the new design of the vapor uses even the space in between the lugs to increase traction with 3d faces enlarging the surface of the tread the surfaces are determined by free falling u bends or arcs the shape comes naturally and at a minimum material input to keep weight low the contact patch or footprint of the tyre to the ground gets bigger therefore improving traction additionally the arcsu bends reinforce the tread blocks which helps the tyre hook up more e