RUN-FLAT TIRE

[Solution(s)] A run-flat tire 1 is provided with a side-reinforcing rubber layer 10 with an approximately crescent-shaped cross section. On the external surface 3s of at least either sidewall 3, multiple protrusions 14 raised in a tire axially outward direction are arranged in a tire circumferential direction. In a front view of the sidewall 3, the protrusions 14 each extend to incline relative to a tire radial direction. Protrusions 14, 14 adjacent to each other in a tire circumferential direction are positioned to overlap each other in a tire circumferential direction.