Patent ID: 7874332

Claim:
A pneumatic tire including a column of center blocks partitioned, on a tread center region, by circumferential thin grooves ( 14 ) formed along a tire circumferential direction and crosswise thin grooves ( 15 ) formed along a tire width direction, and columns of shoulder blocks partitioned by the circumferential thin grooves ( 14 ) and main lug grooves ( 16 ) on shoulder portions, wherein a tread gauge on the tread center region is 95 mm or more, a depth of the lug grooves is 70 to 85% of the tread gauge, a negative ratio in a tread contact width is 15 to 30%, and the number of center blocks ( 18 ) or shoulder blocks ( 19 ) is 32 to 44, the center blocks ( 18 ) include one or more sub-thin grooves ( 17 ), each of which has a length of 100 to 180% of a circumferential length of the center block ( 18 ), and the circumferential thin grooves ( 14 ), the crosswise thin grooves ( 15 ) and the sub-thin grooves ( 17 ) are closed at a time of the tread contact of a fixed load.