Tire with sidewalls (6) having, on their outer surfaces, a set of protuberances (8) that alternate with voids (9). The tread (4) comprises a circumferential groove (10) at at least one axially outermost end (4a). Each protuberance (8) is disposed at the surface of a sidewall, the different protuberances being disposed regularly or irregularly and continuously or discontinuously between a point A and a point E. The inner wall (2a) of the carcass ply (2) of the tire is partially or entirely covered with at least one layer of a self-sealing composition (2b).