Rough-Terrain Motorcycle Tire Tread for Stable Slide Control

The patent applies local quality by providing sipes only on specific middle blocks (second middle blocks with larger tread area) while leaving other middle blocks (first middle blocks with smaller tread area) without sipes. This localized application of sipes allows the tire to achieve slide controllability on soft surfaces where it is most needed, while maintaining rigidity on hard surfaces through the sipe-less blocks.

The patent segments the middle blocks into two distinct types based on sipe presence: first middle blocks without sipes and second middle blocks with sipes. This segmentation allows different functional characteristics to be distributed across the tread, with rigid blocks providing stability on hard surfaces and flexible blocks with sipes providing slide controllability on soft surfaces.

The patent applies local quality by creating two types of middle blocks with different properties: first middle blocks with smaller tread area and no sipes for stability, and second middle blocks with larger tread area and sipes for slide controllability. Each block type is optimized for its specific function based on local requirements.

The patent introduces asymmetry by making the second middle blocks larger than the first middle blocks in the tire radial direction. This asymmetric design allows the larger blocks to accommodate sipes that provide flexibility and slide control, while the smaller blocks maintain rigidity and stability.