Pneumatic tire comprising two annular bead portions each having a bead core (103), a carcass extending between the bead portions (103) through sidewall portions (16) and a tread portion. The carcass includes at least two axially inner plies (1, 2) which extend down from the tread and axially inward of the bead core (103), said at least two axially inner plies being wound around the bead core (103) forming respective turn-ups (1A, 2A), each turn-up (1A, 2A) being located axially outward of the bead core (103). The carcass further includes at least one axially outer ply (5, 6) which extends down from the tread towards the bead core (103) and axially outward of the bead core (103), wherein the at least one axially outer ply (5, 6) is formed using reinforcements having (i) a higher break strength than the reinforcements of the at least two axially inner plies (1, 2); and/or (ii) a lower % elongation at break than the reinforcements of the at least two axially inner plies ply (1, 2). Preferably, the tire is an aircraft tire.
