PNEUMATIC TIRE Russian patent published in 2014 - IPC B60C11/04 B60C11/13 

FIELD: transport.

SUBSTANCE: invention relates to vehicle tread pattern. Pneumatic tire (1) contains tread (2) which includes projections (23) formed by longitudinal grooves made in longitudinal direction of tire and by transversal grooves (24) crossing longitudinal grooves. The transversal grooves (24) in longitudinal direction of tire form multiple pitches (P1, P2 and P3) of tread pattern. In this structure, in the tread (2) shoulder, as tread pattern pitch decreases the volume ratio of transversal grooves (24) in the volume of portion corresponding to tread pattern pitch increases, and in the central zone of tread (2), as tread pattern pitch decreases the volume ratio of transversal grooves in the volume of portion corresponding to tread pattern pitch decreases.

EFFECT: higher stability of vehicle driving while keeping tread uniformity.

4 cl, 5 dwg