To provide a tire capable of securing drainability while effectively suppressing a pitch noise by eliminating a lug groove component.
A ribbed land portion 100B of the pneumatic tire 10 has an inclined surface 110 which makes a height from a groove bottom of a circumferential groove 20A lower toward the circumferential groove 20A. The inclined surface 110 includes a width decreasing portion S1 which becomes narrower circumferentially DC in a tread width direction DT toward a predetermined direction in the tire, and a width increasing portion S2 which becomes wider circumferentially DC in the tread width direction DT toward the predetermined direction in the tire. The inclined surface 110 is repeatedly provided at intervals circumferentially DC in the tire.
| JPS63159112 | RADIAL TIRE FOR PASSENGER VEHICLE |
| JPS54115802 | TREAD OF PNEUMATIC TIRE |
| JPH0696361 | [Title of Invention] Pneumatic radial tire |
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu