A pneumatic tyre comprising: a tread portion ; a pair of sidewall portions ; a pair of bead cores ; a carcass layer comprising at least one carcass ply extending between the pair of bead cores through the tread portion and the pair of sidewall portions ; a pair of first bead apex rubber components arranged disposed outward in a tyre radial direction of the pair of bead cores ; and a belt layer disposed outward in the tyre radial direction of the carcass layer , wherein in an unloaded condition where the tyre is mounted onto a standard rim and inflated with an internal pressure at 50 kPa, the carcass layer has a profile that comprises an outer side portion (P1), the outer side portion (P1) extending from a position (A) where the carcass layer separates from the belt layer near an outer end of the belt layer in the tyre axial direction to a maximum width position (B) of the carcass layer , each of the pair of outer side portions (P1) is located outside a virtual arc (C0) having a single radius (R0) of curvature passing through the position (A), the maximum width position (B), and an outermost end (C) in the tyre radial direction of its first bead apex rubber component , and the carcass ply comprises a main portion extending between the pair of bead cores , and a pair of turn-up portions turned up around the pair of bead cores from inside to outside of the tyre , characterized in that a pair of second bead apex rubber components is disposed outwardly in the tyre axial direction of the pair of turn-up portions , and outermost ends of the pair of turn-up portions are located outwardly in the tyre radial direction of the maximum width position (B). a tread portion ; a pair of sidewall portions ; a pair of bead cores ; a carcass layer comprising at least one carcass ply extending between the pair of bead cores through the tread portion and the pair of sidewall portions ; a pair of first bead apex rubber components arranged disposed outward in a tyre radial direction of the pair of bead cores ; and a belt layer disposed outward in the tyre radial direction of the carcass layer , in an unloaded condition where the tyre is mounted onto a standard rim and inflated with an internal pressure at 50 kPa, the carcass layer has a profile that comprises an outer side portion (P1), the outer side portion (P1) extending from a position (A) where the carcass layer separates from the belt layer near an outer end of the belt layer in the tyre axial direction to a maximum width position (B) of the carcass layer , each of the pair of outer side portions (P1) is located outside a virtual arc (C0) having a single radius (R0) of curvature passing through the position (A), the maximum width position (B), and an outermost end (C) in the tyre radial direction of its first bead apex rubber component , and the carcass ply comprises a main portion extending between the pair of bead cores , and a pair of turn-up portions turned up around the pair of bead cores from inside to outside of the tyre , characterized in that a pair of second bead apex rubber components is disposed outwardly in the tyre axial direction of the pair of turn-up portions , and outermost ends of the pair of turn-up portions are located outwardly in the tyre radial direction of the maximum width position (B). <EOS>