A tire includes a plurality of tire knobs of various shapes arranged to form contact surfaces configured to touch the ground. The contact surface is the radially outermost surface of each knob which may be formed in a variety of three-dimensional structure...

A tire includes knobs that are small in relation to the size of the tire. The knobs are closely positioned together in groups and may be disposed in recesses to lower the tops of the knobs relative to the circumferential outer surface of the tire. The rece...