Abstract: A run-flat tire includes a tire casing and a steel rim connected to an opening side of the tire casing to form a cavity, wherein a shock absorbing elastic component is provided along a radial direction in the cavity, one end of the shock absorbing elastic component is connected to the tire casing, and a gap is provided between another end of the shock absorbing elastic component and an outer wall of the steel rim. Specifically, a first annular shock absorbing cushion is provided along a circumferential direction inside the cavity, one end of the shock absorbing elastic component is fixed on the tire casing, and another end of the shock absorbing elastic component is fixed on the first annular shock absorbing cushion; a second annular shock absorbing cushion is provided along the circumferential direction on the outer wall of the steel rim.