A tire comprising: a tread portion provided with four circumferential grooves extending continuously in the tire circumferential direction to axially divide the tread portion into five land regions , the four circumferential grooves including two shoulder circumferential grooves , and two crown circumferential grooves therebetween, the five land regions including two shoulder land regions between the two shoulder circumferential grooves and tread edges (To, Ti), two middle land regions between the shoulder circumferential grooves and the crown circumferential grooves , and one crown land region between the two crown circumferential grooves , wherein each of the two middle land regions is provided with a longitudinal sipe extending continuously in the tire circumferential direction, first middle sipes each extending from the adjacent crown circumferential groove and terminated within the middle land region without being connected to the longitudinal sipe therein, and second middle sipes extending from the adjacent shoulder circumferential groove and terminated within the middle land region without being connected to the longitudinal sipe therein, and each of the two shoulder land regions is provided with shoulder transverse grooves extending from the adjacent tread edge (To, Ti) and terminated within the shoulder land region , characterized in that the first middle sipes are provided with first chamfers extending to ground contacting top surfaces of the respective middle land regions , and the second middle sipes are provided with second chamfers extending to ground contacting top surfaces of the respective middle land regions . a tread portion provided with four circumferential grooves extending continuously in the tire circumferential direction to axially divide the tread portion into five land regions , the four circumferential grooves including two shoulder circumferential grooves , and two crown circumferential grooves therebetween, the five land regions including two shoulder land regions between the two shoulder circumferential grooves and tread edges (To, Ti), two middle land regions between the shoulder circumferential grooves and the crown circumferential grooves , and one crown land region between the two crown circumferential grooves , a longitudinal sipe extending continuously in the tire circumferential direction, first middle sipes each extending from the adjacent crown circumferential groove and terminated within the middle land region without being connected to the longitudinal sipe therein, and second middle sipes extending from the adjacent shoulder circumferential groove and terminated within the middle land region without being connected to the longitudinal sipe therein, and each of the two shoulder land regions is provided with shoulder transverse grooves extending from the adjacent tread edge (To, Ti) and terminated within the shoulder land region , the first middle sipes are provided with first chamfers extending to ground contacting top surfaces of the respective middle land regions , and the second middle sipes are provided with second chamfers extending to ground contacting top surfaces of the respective middle land regions . <EOS>