| 摘要 |
A pneumatic tire whose rolling resistance can be reduced while the snow traction performance is maintained is provided. In a pneumatic tire 1, a tread center area and tread shoulder areas are sectioned at centerlines 1 of circumferential direction main grooves 22 in the outermost sides in a tire width direction. A ratio G = (A + B)/X of a sum A + B of a groove area A of the circumferential direction main grooves 21, 22 and a groove area B of width direction grooves 3 to a contact area X of a tread portion is G ‰¤ 0.25. A ratio S = B/(A + B) of the groove area B of the width direction grooves 3 to the sum A + B of the groove area A of the circumferential direction main grooves 21, 22 and the groove area B of the width direction grooves 3 is 0.25 < S < 0.45. A ratio Gs = C/Y of a groove area C of the tread shoulder areas to a contact area Y of the tread shoulder areas is Gs < 0.20. The ratio G and the ratio Gs have the relation of Gs < G. |
