Tire

A tire comprising:

• a tread portion being provided with a plurality of circumferential grooves continuously extending in a tire circumferential direction, a plurality of lateral grooves extending in a tire axial direction, and a plurality of first blocks, wherein
• each of the plurality of first blocks is provided with at least one first sipe,
• in each first block, the at least one first sipe extends in a zigzag shape in both of a cross-section perpendicular to a sipe length direction and a cross-section parallel to a ground contact surface of the first block,
• in each first block, the at least one first sipe comprises a sipe bottom, and a tie-bar locally raising outwardly in a tire radial direction from the sipe bottom and terminating without reaching the ground contact surface of the first block to divide the at least one first sipe into a first portion and a second portion in the sipe length direction,
• in each first block, the sipe bottom of the first portion and the sipe bottom of the second portion extend in a zigzag shape in a cross-section parallel to the ground contact surface of the first block,
• the sipe bottom of the first portion communicates with a first widening portion having a circular shape in a cross-section perpendicular to the sipe length direction,
• the first widening portion has a groove width greater than a width of the first portion,
• the first widening portion extends in a zigzag shape along the sipe bottom of the first portion,
• the sipe bottom of the second portion communicates with a second widening portion having a circular shape in a cross-section perpendicular to the sipe length direction,
• the second widening portion has a groove width greater than a width of the second portion,
• the second widening portion extends in a zigzag shape along the sipe bottom of the second portion, and
• the first widening portion does not communicate with the second widening portion.