Tire tread with three sipe levels and tire

A tire comprising a tread, wherein the tread comprises:

• a plurality of tread components each having a respective contact surface, wherein at least one of the plurality of tread components comprises a sipe defining a first and a second opposing faces of the at least one component;
• wherein the sipe has a sipe depth along a wear direction substantially orthogonal to the respective contact surface;
• wherein the sipe depth comprises in sequence, from a radially external position to a radially internal position, a first and a second section, wherein an intermediate section links said first and second section;
• and
• wherein the first and second opposing faces:
• define first profiles along the first section with a plane orthogonal to a longitudinal extension direction of the sipe, the first profiles presenting a pattern to intersect a straight line lying in the orthogonal plane in at least two distinct points;
• define second profiles along the second section with the orthogonal plane, said second profiles presenting a rectilinear pattern;
• and
• are continuously and increasingly spaced apart between a minimum depth and a maximum depth of the intermediate section,
• wherein the width of the sipe in the second section is substantially constant along the depth of the second section and less than the width of the sipe at the maximum depth of the intermediate section.