TIRE HAVING TREAD GROOVES AND METHOD FOR CONFIGURING GROOVE DEPTHS

A tire comprises a tread portion provided with grooves, when the tire mounted on a standard wheel rim and inflated to a standard tire pressure is placed on a flat surface at a camber angle of zero and loaded with a standard tire load, the tire has a ground contacting patch. The depths of the respective circumferential grooves, and ground contact lengths of the ground contacting patch measured at axial positions of the respective circumferential grooves, are in a relationship in which the groove depth increases or decreases as the ground contact length increases or decreases.