A tire tread including a ground-contacting surface which comes into contact with a road surface during rolling, at least one circumferential groove which has a depth (Dc) and extends in a circumferential direction of a tire, a plurality of auxiliary grooves which have a depth (Da) and extend in a direction intersecting the circumferential groove, and a plurality of blocks defined by the circumferential groove and the auxiliary grooves, wherein each block includes an upper surface forming part of the ground-contacting surface, and at least two front surfaces (52, 53) which are separated by a length in the circumferential direction of the tire and each face different auxiliary grooves, and the upper surface forms at least two edges at intersecting portions with the front surfaces (52, 53), namely a first edge serving as a trailing edge when traveling in a first direction, and a second edge serving as the trailing edge when traveling in a second direction opposite to the first direction, wherein each block is composed of at least two rubber layers that overlap in the circumferential direction of the tire, wherein the at least two rubber layers comprise a first rubber layer which includes at least part of the first edge and is composed of a first rubber composition, and a second rubber layer which includes at least part of the second edge and is composed of a second rubber composition different from the first rubber composition, wherein the first rubber layer is exposed in a region of at least 20% of the upper surface toward the inside of the block from the first edge, and a region of at least 60% of the front surface in a radially inward direction from the first edge, and wherein the first rubber layer occupies at least 20% and at most 80% of the volume of the block, the tire tread being characterized in that a glass transition temperature (Tg) of the first rubber composition forming the first rubber layer is greater than -20°C, and the glass transition temperature Tg of the second rubber composition forming the second rubber layer is at most equal to - 20°C. wherein each block includes an upper surface forming part of the ground-contacting surface, and at least two front surfaces (52, 53) which are separated by a length in the circumferential direction of the tire and each face different auxiliary grooves, and the upper surface forms at least two edges at intersecting portions with the front surfaces (52, 53), namely a first edge serving as a trailing edge when traveling in a first direction, and a second edge serving as the trailing edge when traveling in a second direction opposite to the first direction, wherein each block is composed of at least two rubber layers that overlap in the circumferential direction of the tire, wherein the at least two rubber layers comprise a first rubber layer which includes at least part of the first edge and is composed of a first rubber composition, and a second rubber layer which includes at least part of the second edge and is composed of a second rubber composition different from the first rubber composition, wherein the first rubber layer is exposed in a region of at least 20% of the upper surface toward the inside of the block from the first edge, and a region of at least 60% of the front surface in a radially inward direction from the first edge, and wherein the first rubber layer occupies at least 20% and at most 80% of the volume of the block, the tire tread being characterized in that a glass transition temperature (Tg) of the first rubber composition forming the first rubber layer is greater than -20°C, and the glass transition temperature Tg of the second rubber composition forming the second rubber layer is at most equal to - 20°C.