TYRE

A tyre includes a tread portion including four circumferential grooves (5, 6, 7, 8) extending continuously in the tyre circumferential direction and five land portions (11, 12, 13, 14, 15) divided by the four circumferential grooves. The five land portions include a first middle land portion (13) located between a first tread edge (T1) and a tyre equator (C). The first middle land portion is provided with first middle sipes (30) inclined with respect to a tyre axial direction and fully traversing the first middle land portion in the tyre axial direction. Each first middle sipe (30) includes a pair of sipe edges, and at least one of the pair of sipe edges opens at the ground contact surface via a chamfer portion (31) over an entire length thereof. The chamfer portion (31) has a chamfer width increasing continuously from a first longitudinal edge (13a) to a second longitudinal edge (13b) of the first middle land portion (13).