PNEUMATIC TIRE

摘要

A pneumatic tire includes: a tread portion; three or more main grooves provided on the tread portion at intervals in a tire width direction so as to extend in a tire circumferential direction; and a plurality of land portions partitioned between the main grooves adjacent to each other in the tire width direction, wherein the plurality of land portions include: ground contact areas having an arc shape in cross section in the tire width direction; and depressed portions opening to the ground contact areas, and the land portion having a larger ratio of opening surface area a of the depressed portions opening in the area between the main grooves adjacent to each other in the tire width direction with respect to surface area A of the area (a/A) has an arc-shaped ground contact area with a cross section in the tire width direction having a smaller radius of curvature.

主权项

1. A pneumatic tire comprising:
a tread portion; three or more main grooves provided on the tread portion at intervals in a tire width direction so as to extend in a tire circumferential direction; and a plurality of land portions partitioned between the main grooves adjacent to each other in the tire width direction, wherein the plurality of land portions each include a ground contact area having an arc shape in cross section in the tire width direction and a depressed portion opening to the ground contact area, and the land portion having a larger ratio of opening surface area a of the depressed portion opening in the area with respect to surface area A of an area between the main grooves adjacent to each other in the tire width direction (a/A) has an arc-shaped ground contact area having a smaller radius of curvature.