Pneumatic tire

A pneumatic tire comprising:

• a tread portion provided with an asymmetrical tread pattern such that the tire has a side to be faced outward when the tire is installed on a vehicle and thereby the tread portion has an outside tread edge to be positioned outward and an inside tread edge to be positioned inward,
• the tread portion being provided with a pair of shoulder main grooves extending continuously in the tire circumferential direction and disposed one on each side of the tire equator, the pair of the shoulder main grooves being an outside shoulder main groove on the outside tread edge side and an inside shoulder main groove on the inside tread edge side, and
• a center main groove extending continuously in the tire circumferential direction and disposed between a pair of the shoulder main grooves so that the tread portion is divided into a pair of crown land portions between the center main groove and the shoulder main grooves and a pair of shoulder land portions axially outside the shoulder main grooves, the a pair of the crown land portions being an outside crown land portion between the center main groove and the outside shoulder main groove, and an inside crown land portion between the center main groove and the inside shoulder main groove,
• wherein
• the sum of the widths of the shoulder main grooves and the width of the center main groove is 24% to 28% of a tread width,
• in the crown land portions, a groove having a width of not less than 2 mm and extending across the entire width of the crown land portion is not provided, whereas a plurality of crown sipes having a width of less than 2 mm are provided,
• the crown sipes include first sipes having a lateral direction part extending parallel with the tire axial direction and an oblique part inclined with respect to the lateral direction part, said first sipes being provided in the inside crown land portion, and
• the ratio ΣLy/ΣLs of the sum ΣLy of lengths Ly of the lateral direction parts and the sum ΣLs of lengths Ls of the crown sipes is not more than 0.15.