TIRE

A tire includes a tread portion (2); the tread portion is provided with grooves each having a pair of groove walls (4); at least one of the groove walls is provided on a surface thereof with a pattern portion (7) having a plurality of micro-protrusions (8); the pattern portion is provided with the micro-protrusions (8) at a density of 1 to 5 per 1 mm2 of the groove wall area