Pneumatic tire

A pneumatic tire comprising:

• a tread portion provided with a plurality of circumferentially and continuously extending main grooves to form a plurality of land portions, the tread portion comprising a designated installing direction to a vehicle to have an outboard tread edge and an inboard tread edge;
• the main grooves comprising an outboard shoulder main groove disposed on the side of the outboard tread edge, an inboard shoulder main groove disposed on the side of the inboard tread edge and a central main groove disposed between the outboard shoulder main groove and the inboard shoulder main groove;
• the land portions comprising an outboard central land portion between the outboard shoulder main groove and the central main groove, an inboard central land portion between the inboard shoulder main groove and the central main groove, and an inboard shoulder land portion between the inboard shoulder main groove and the inboard tread edge;
• the outboard central land portion being provided with a plurality of first central sipes having a width of less than 2 mm, the outboard central land portion being not provided with any grooves having a width equal to or more than 2 mm;
• the inboard central land portion being provided with a plurality of second central sipes having a width of less than 2 mm, the inboard central land portion being not provided with any grooves having a width equal to or more than 2 mm, wherein the inboard central land portion has an axial width greater than an axial width of the outboard central land portion;
• the first central sipes extending from the central main groove to the outboard shoulder main groove;
• the second central sipes extending from the central main groove to the inboard shoulder main groove;
• the inboard shoulder land portion being provided with inboard shoulder sipes each having a width of less than 2 mm,
• wherein
• the inboard shoulder sipes are inclined in a same direction as the second central sipes with respect to a tire axial direction,
• the inboard shoulder sipes extend axially outwardly from the inboard shoulder main groove beyond the inboard tread edge, and
• the inboard shoulder sipes are smoothly continuous with respect to the respective second central sipes through the inboard shoulder main groove such that extension lines of the groove centerlines of the inboard shoulder sipes and extension lines of the groove centerlines of the second central sipes intersect with one another at intersections within the inboard shoulder main groove;
• and
• the inboard shoulder land portion being further provided with inboard shoulder lug grooves each having a width equal to or more than 2 mm, wherein the inboard shoulder lug grooves extend axially outwardly from the inboard shoulder main groove beyond the inboard tread edge.