| 主权项 |
1. A pneumatic tire comprising a tread portion provided with a plurality of blocks each provided with sipes extending across the entire axial width of the block,
the blocks include axially innermost first blocks each having a longitudinal block rigidity (G), and axially outer blocks each having a longitudinal block rigidity (G), andthe longitudinal block rigidity (G) of the axially innermost first blocks is 90% to 110% of the longitudinal block rigidity (G) of the axially outer blocks, wherein
the longitudinal block rigidity (G) of a block is defined by the following equation: G=(A×B)/(C×D×E), whereinA is the maximum length in the tire circumferential direction of the block,B is the maximum width in the tire axial direction of the block,C is the maximum groove depth of lateral grooves which are disposed on both sides of the block in the tire circumferential direction so as to circumferentially divide the block,D is the maximum depth of the sipes disposed in the block, andE is the number of the sipes disposed in the block. |
