Abstract: A tire including a decoupling groove is provided, the tire comprising: a body, a shoulder, a tread surface including at least one decoupling groove extending radially inwardly into the body from the tread surface, and a plurality of parallel sipes, wherein the decoupling groove is oriented adjacent to the shoulder, wherein the decoupling groove is defined by an axially outer groove sidewall and an axially inner groove sidewall, has a width W1, and has a centerline, wherein the plurality of parallel sipes extend axially into the inner groove sidewall, wherein the decoupling groove has a radially inner groove base defined by a curvilinear base surface, has a width W2, and has a center, wherein the width W2 is greater than the width W1, and wherein a centerline of the decoupling groove intersects the center of the groove base.