Pneumatic Tire Groove Width Variation for Stability and Noise

The patent applies local quality by providing lateral grooves only in land portions located adjacent to the outer sides in the tire width direction, while maintaining solid continuous land portions in the center region. This localized groove configuration improves water drainage at the shoulders without compromising the block rigidity in the center portion, resolving the contradiction between water drainage characteristics and block rigidity.

The patent employs asymmetric groove placement by positioning main grooves at specific locations rather than symmetrically distributing them. The lateral grooves are configured to extend from the outer sides toward the center but terminate before reaching it, creating an asymmetric pattern that prioritizes water drainage at the shoulders while preserving steering stability in the center region.

The patent applies local quality by configuring lateral grooves with specific width characteristics in different regions. The grooves have sufficient width in the outer regions to maintain water drainage capability for wet performance, while the overall pattern and termination before the center region reduces noise generation in the pass-by area, resolving the contradiction between pass-by noise and wet performance.