| 摘要 |
PURPOSE:To reduce noise with wetting resistance maintained by positioning a lag groove which classifies a land part area in the land part area without an axial inside end reaching grooves in the peripheral direction, and forming at least one of the grooves in the peripheral direction by repeating an expanding width part and a contracting width part in the peripheral direction. CONSTITUTION:Treads 1 are partitioned in a land part area 3 by grooves in the peripheral direction and both ends E of treads, and the land part area 3 is classified in the peripheral direction by lag grooves 4. The lag grooves 4 are positioned in the land part area 3 without an inside end in the axial direction reaching a main groove 21 in the peripheral direction which partitions the land part area, and at least one of the grooves in the peripheral direction is formed by repeating an expanding width part 11 and a contracting width part 12 in the peripheral direction. It is thus possible to reduce noise with wet skid properties maintained. |
