To provide a pneumatic tire with run-flat durability improved.

In a pneumatic tire having a run-flat driving performance by being provided on a tread section 2 with a plurality of circumferential grooves 11 which extends circumferentially in the tire, and by being provided in a side wall section 3 with a rubber reinforcing layer 7 of a crescent-shape cross section which extends beneath a belt layer 9, the tread side edge 7a of the rubber reinforcing layer 7 is arranged so as not to overlap with the circumferential grooves 11, and the interval between the tread side edge 7a of the rubber reinforcing layer 7 and the circumferential grooves 11 in the width direction of the tire is set to be 5 mm or greater.