| 摘要 |
The pneumatic tire 1 satisfies both SW≦175 mm and OD/SW≧3.6, where SW is the width of the pneumatic tire 1 and OD is the outer diameter of the pneumatic tire 1. Moreover, the pneumatic tire 1 satisfies both SW≦175 mm and OD/RD≦1.4, where SW is the width, OD is the outer diameter, and RD is the inner diameter of the pneumatic tire 1, which is the diameter of a portion of the pneumatic tire 1 (an end portion of a bead portion) in contact with a wheel in a state where the pneumatic tire 1 is fitted to the wheel. |
| 主权项 |
1. A tire having a circumferential groove portion, a lateral groove portion, and a belt formed in a tread thereof, the circumferential groove portion formed continuously in a tire circumferential direction, the lateral groove portion extending in a tread width direction, the belt provided inside the tire, wherein
a width SW of the tire, an outer diameter OD, and a tire inner diameter RD defined by a diameter of a portion of the tire in contact with a wheel in a state where the tire is fitted to the wheel, of the tire satisfy SW≦175 mm, OD/SW≧3.6, and OD/RD≦1.4, and a groove area ratio which is a ratio of an area of grooves including the circumferential groove portion and the lateral groove portion to a contact patch area of the tire is 25% or less, wherein a plurality of the circumferential groove portions are formed, and the circumferential groove portion formed on an outer side of the vehicle in the tread width direction has a larger length in the tread width direction. |
