PNEUMATIC TIRE

The present invention is to provide a runflat tire having an effectively improved runflat durability while continuously running under a runflat condition due to a low tire pressure or puncture, without sacrificing other characteristics such as riding comfort during an ordinal driving at normal internal pressure. A runflat tire 1 according to the first aspect comprises a belt 8 consisting of at least one rubber-coated cord layer laid between a crown portion of a carcass 7 and a tread portion 5, the carcass consisting of at least one ply toroidally extending bead portions 3, sidewall portions 4 and the tread portion; a reinforcing rubber 11 which has a generally crescent sectional shape and is arranged at the interior surface side at least of sidewall portions 4; and a ring-shaped rim guard portion 13 protruding outwardly in the tire's width direction arranged at the exterior surface position of the tire immediately above a rim flange Rf. The tire is characterized in that the rim guard portion 13 is formed by a hard rubber, and a 100% modulus of the hard rubber is not less than 3.0 MPa and within a range from two to five times as much as that of an outer skin rubber 14 constituting the sidewall portions 4.