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 recesses may comprise a variety of shapes and designs. The knobs may have varying lengths, widths, heights and shapes. The knobs may also be grouped to form letters, numerals, symbols and graphic images. The size of the knobs and distance of spacing between adjacent knobs may be proportionally small in relation to the tire's width, diameter, circumference, or ridable surface area.
