PNEUMATIC TIRE

Pneumatic tire having an asymmetric tread pattern with an outboard tread edge (Te) and an inboard tread edge (Te) to be located outside and inside of a vehicle respectively; inboard shoulder blocks (13) have an axial width (L2) and outboard shoulder blocks have an axial width (L1) more than the axial width of the inboard shoulder blocks; the inboard and outboard shoulder blocks are each provided with a plurality of sipes (17, 18); the sipes of each outboard shoulder block include a circumferential sipe (18) as the axially outermost sipe; the circumferential sipe (18) extends at an angle of not more than 10 degrees with respect to the tire circumferential direction; the outboard shoulder block (12) has an axially outer sidewall of which surface is provided with a plurality of narrow buttress grooves (19) extending radially inwardly from the outboard tread edge.