TIRE TREAD WITH THREE SIPE LEVELS AND TIRE

A tread () for a tire () having a plurality of tread components () comprising a sipe () defining first () and a second () opposing faces; the said sipe () having a sipe depth (P) and comprises in sequence, from a radially external position to a radially internal position, a first (A) and a second (C) section, wherein an intermediate section (B) links said first (A) and second (C) section and wherein said first () and second () opposing faces define first profiles (, ) along said first section (A) with a plane (γ) orthogonal to a longitudinal extension direction (L) of said sipe (), said first profiles (, ) presenting a pattern such as to intersect a straight line lying in said orthogonal plane (y) in at least two distinct points, and define second profiles (, ) along said second section (C) with said orthogonal plane (y), said second profiles (, ) presenting a substantially rectilinear pattern; said first () and second () opposing faces- are continuously and increasingly spaced apart between a minimum depth