A pneumatic tire comprising a tread pattern (10), the tire in a tread portion comprising: two circumferential grooves (12, 12c, 12r, 12l) extending continuously in a tire circumferential direction; a plurality of inclined lug grooves (16, 16r, 16l) disposed in the tire circumferential direction, each having an opening end (16a) and a terminal end (16b), said opening end (16a) acting as an end into one of said circumferential grooves (12, 16a); 12c, 12r, 12l) and the lug grooves are encased in a bottom portion (14, 14r, 14l) between the circumferential grooves (12, 12c, 12r, 12l) and the bottom portion extends continuously in the tire circumferential direction, and the terminal end (16b is closed as the other end in the bottom portion (14, 14 r, 14 l), and wherein each of the inclined lug grooves (16, 16 r, 16 l) is inclined with respect to a tire width direction and in a first direction (x2) of the tire circumferential direction of the opening end (16a) extends; and narrow grooves or fins (18, 18r, 18l) extending in a second direction (x1) of the tire circumferential direction opposite to the first direction (x2) each having a start end (18a) and a closed end (18b) in the bottom portion (14, 14r, 14l) and having a smaller groove width than each of the inclined lug grooves (16, 16r, 16l) at the position of the starting end (18a), the starting end (18a) being at a middle point between the opening end and the terminal Each of the inclined lug grooves (16, 16r, 16l) has a curved portion (16c) and a straight portion (16d) including the terminal end (16b) between the one end of each of the inclined lug grooves (16, 16r, 16l) Opening end (16 a) and the terminal end (16 b), the straight portion (16 d) extends substantially parallel to the tire circumferential direction, ...
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