| 摘要 |
A pneumatic tire for motorcycle for running on rough terrain comprises a tread portion 2 provided with a directional tread pattern having an intended tire rotational direction X. The tread portion 2 is provided with crown blocks 4 and middle blocks 5. The crown block 4 comprises an axially long main portion 4m and a protruding portion 4t protruding from an axial central part of the main portion 4m toward the opposite direction of the intended tire rotational direction. In a block group Y consisting of each crown block 4 and two axially adjacent middle blocks 5 disposed one on each side of the crown block 4, the center P1 of gravity of the crown block 4 is positioned on the toe-side of each middle block 5, and the center P2 of gravity of each middle block 5 is positioned on the heel-side of the crown block 4. |
