A run-flat tire capable of reducing weight and enhancing its uniformity. The run-flat tire 1 provides a troidal carcass 6 extending from a tread portion 2 to the bead core of each bead portion 4 through each of sidewall portions 3 and a pair of side reinforcing rubbers 9 arranged inside the carcass 6 and extending along the sidewall portions 3 in the tire radial direction inwardly and outwardly. In the outer surface of the tread portion 2, pattern elements are arranged, thereby forming a pitch pattern. Each of the side reinforcing rubber 9 provides with recesses 11 circumferentially spaced on the inner surface of side reinforcing rubber facing the tire cavity. The total number (n) of recesses 11 on each of the side reinforcing rubber 9 is 0.70 to 1.30 times the total number of pattern elements.