Pneumatic tire

A pneumatic tire comprising:

• a tread portion having tread edges, said tread portion provided with an axially inner straight circumferential groove and an axially outer wavy circumferential groove on each side of a tire equator, each of said axially inner straight circumferential grooves and axially outer wavy circumferential grooves having an axially inner groove wall and an axially outer groove wall that radially extends from a groove bottom to a tread face;
• each of the axially inner and outer groove walls being inclined toward the tire equator so that a radially outer edge of each groove wall at the tread face is located axially inward of the radially inner edge of each groove wall at the groove bottom;
• each of the axially inner groove walls intersecting the tread face at an inclination angle in the range of from 25 to 45 degrees with respect to a line normal to the tread face,
• each of the axially outer groove walls intersecting the tread face at an inclination angle in the range of from 0 to 20 degrees with respect to a line normal to the tread face;
• and
• a plurality of axial grooves for channelling water from the circumferential grooves toward the tread edges to increase aquaplane resistance, each axial groove having an open v-shaped configuration, extending continuously across the tread portion between the tread edges and intersecting the axially inner straight circumferential grooves and the axially outer wavy circumferential grooves.