Pneumatic Tire

摘要

The present invention relates to a pneumatic tire (1) in which the ratio of the total width SW and the outer diameter OD satisfies “SW/OD≦0.3”, and grooves are provided on the tread portion (10). In the ground contact region (G) of the tread portion, when the groove area ratio with respect to the ground contact area is GR, the ground contact width is W, the region having a width of 50% of the ground contact width W and the tire equatorial line (CL) as center is the center region (AC), the groove area ratio in the center region is GCR, the ground contact region on the outer side in the tire width direction of the center region is the shoulder region (AS), and the groove area ratio in the shoulder region is GSR, the ground contact region of the tread portion is formed to satisfy “10%≦GR≦25%” and “GCR≦GSR”.

主权项

1. A pneumatic tire comprising grooves on a tread portion,
the ratio of a total width SW and an outer diameter OD of the pneumatic tire SW/OD satisfying:
SW/OD≦0.3, and in a ground contact region of the tread portion, a groove area ratio with respect to a ground contact area is GR, a ground contact width is W, a region having a width of 50% of the ground contact width W and a tire equatorial line as center is a center region AC, a groove area ratio in the center region AC is GCR, a ground contact region on an outer side in a tire width direction from the center region AC is a shoulder region AS, and a groove area ratio in the shoulder region AS is GSR, the ground contact region of the tread portion is formed to satisfy:
10%≦GR≦25%, andGCR≦GSR.