| 摘要 |
PROBLEM TO BE SOLVED: To provide a pneumatic tire for heavy load which improves rigidity balance of a block and can improve uneven wear resistance performance.SOLUTION: A pneumatic tire for heavy load has a plurality of main grooves 3 continuously extended in the tire circumferential direction and a plurality of lateral grooves communicated between the main grooves 3, provided on a tread part 2 and, thereby, allows a plurality of blocks to be partitioned. Therein, the main grooves 3 contain a pair of crown main grooves 4 extended in a zig-zag shape on both sides of the tire equator, the lateral grooves contain a plurality of crown lateral grooves 11 which partition a crown block 15 having a tread formed in an approximately hexagonal shape between the crown main grooves 4 and, on each crown block 15, a length of each edge of the tread S falls into a range of 0.8 to 1.3 times with respect to the other all edges.SELECTED DRAWING: Figure 2 |
