Pneumatic tire

A pneumatic tire comprising a tread portion provided with

• a crown main groove extending continuously in the tire a circumferential direction and disposed on each side the tire equator,
• a shoulder main groove extending continuously in the tire a circumferential direction and disposed axially outside each said crown main groove,
• a plurality of middle axial grooves extending between said crown main groove and said shoulder main groove, and
• a plurality of shoulder axial grooves extending between said shoulder main groove and the tread edge
• so that the tread portion is divided into
• a row of circumferentially arranged shoulder blocks formed between said shoulder main groove and said tread edge,
• a row of circumferentially arranged middle blocks formed between said crown main groove and said shoulder main groove, and
• a central land portion formed between the two crown main grooves and provided with central notches,
• said central notches extending from said crown main groove toward the tire equator, terminating within the central land portion, arranged circumferentially of the tire at intervals, and having a depth smaller than the depth of the crown main groove, wherein
• the depth of each said central notch is 55% to 65% of the depth of the crown main groove,
• said central notches satisfy the following condition (A) or (B):
• (A) the maximum axial length of each said central notch is 10% to 15% of the maximum axial length of the central land portion, and the circumferential length of an opening of each said central notch to the crown main groove is 10% to 15% of one pitch of the shoulder block row;
• (B) the circumferential length of an opening of each said central notch to the crown main groove is 15% to 25% of one pitch of the central notches.