A tire comprising a tread portion having a first tread edge (T1), and provided with a shoulder circumferential groove disposed adjacently to the first tread edge (T1) and extending continuously in the tire circumferential direction, so as to define a shoulder land portion between the shoulder circumferential groove and the first tread edge (T1), wherein the shoulder land portion is provided with shoulder lateral grooves extending from the shoulder circumferential groove to the first tread edge (T1), so as to circumferentially divide the shoulder land portion into shoulder blocks , and the shoulder lateral grooves include a tie-bar-equipped shoulder lateral groove provided with at least one tie bar rising from the groove bottom so as to connect between two of the shoulder blocks adjacent to the tie-bar-equipped shoulder lateral groove , characterized in that the width (w2) in the tire axial direction of the ground contacting top surface of each of the shoulder blocks is in a range from 35 % to 48 % of a half tread width (Twh) between the first tread edge (T1) and the tire equator (c), each of the shoulder blocks is provided with one or more shoulder sipes each extending from one of the shoulder lateral grooves and ending within the shoulder block , the ground contacting top surface of each of the shoulder blocks is provided with one or more shoulder sipes extending in the tire circumferential direction, the shoulder lateral grooves include a tie-bar-equipped shoulder lateral groove provided with tie bars raising from the groove bottom so as to connect between two of the shoulder blocks adjacent to each other through the tie-bar-equipped shoulder lateral groove , and in the case of the shoulder sipe connected to the tie-bar-equipped shoulder lateral groove , the shoulder sipe is connected at a formation position of one of said tie bars in the tire axial direction. a tread portion having a first tread edge (T1), and provided with a shoulder circumferential groove disposed adjacently to the first tread edge (T1) and extending continuously in the tire circumferential direction, so as to define a shoulder land portion between the shoulder circumferential groove and the first tread edge (T1), wherein the shoulder land portion is provided with shoulder lateral grooves extending from the shoulder circumferential groove to the first tread edge (T1), so as to circumferentially divide the shoulder land portion into shoulder blocks , and the shoulder lateral grooves include a tie-bar-equipped shoulder lateral groove provided with at least one tie bar rising from the groove bottom so as to connect between two of the shoulder blocks adjacent to the tie-bar-equipped shoulder lateral groove , characterized in that the width (w2) in the tire axial direction of the ground contacting top surface of each of the shoulder blocks is in a range from 35 % to 48 % of a half tread width (Twh) between the first tread edge (T1) and the tire equator (c), each of the shoulder blocks is provided with one or more shoulder sipes each extending from one of the shoulder lateral grooves and ending within the shoulder block , the ground contacting top surface of each of the shoulder blocks is provided with one or more shoulder sipes extending in the tire circumferential direction, the shoulder lateral grooves include a tie-bar-equipped shoulder lateral groove provided with tie bars raising from the groove bottom so as to connect between two of the shoulder blocks adjacent to each other through the tie-bar-equipped shoulder lateral groove , and in the case of the shoulder sipe connected to the tie-bar-equipped shoulder lateral groove , the shoulder sipe is connected at a formation position of one of said tie bars in the tire axial direction. <EOS>