Pneumatic tire

摘要

The pneumatic tire includes a plurality of circumferential main grooves and extending in the tire circumferential direction, and a plurality of land portions partitioned by the circumferential main grooves. One row of the land portion includes a plurality of lug grooves that pass through the land portion in the tire width direction and is disposed at predetermined intervals in the tire circumferential direction, and a plurality of blocks partitioned by the lug grooves. Also, the lug groove includes a first lug groove portion and at least one second lug groove portion opening into one of the circumferential main grooves. Also, the groove width b of the first lug groove portion and the groove width B of the second lug groove portion have the relationships of 2.0 mm≦b≦5.0 mm, 5.0 mm≦B≦10.0 mm, and b

主权项

1. A pneumatic tire, comprising: four or more circumferential main grooves extending in a tire circumferential direction; and five or more land portions partitioned by the circumferential main grooves,
a center land portion is defined as the land portion disposed on a tire equatorial plane, or the land portion partitioned by the circumferential main groove disposed on the tire equational plane, the center land portion includes a plurality of lug grooves that pass through the center land portion in a tire width direction and is disposed at predetermined intervals in the tire circumferential direction, and a plurality of blocks partitioned by the plurality of lug grooves, the lug grooves including a first lug groove portion, and at least one second lug groove portion that opens into one of the circumferential main grooves, a groove width b of the first lug groove portion and a groove width B of the second lug groove portion having relationships of 2.0 mm≦b≦4.0 mm and bβ, and a groove depth H1 of the circumferential main grooves is in the range of 12 mm≦H1.