A tyre for a motorcycle comprising a carcass extending between bead cores of bead portions via a tread portion and sidewall portions , wherein each of the bead portions is provided with a bead apex rubber extending in a tyre radial direction from a respective one of the bead cores , wherein a band layer formed of a band cord spirally wound is arranged on an outer side in the tyre radial direction of the carcass and inside of the tread portion , characterized in that when (I) the tyre mounted on a standard rim and inflated to a standard inner pressure is in contact with a flat surface (S) with a camber angle of 40 degrees, (II) a load (F) applied in a direction perpendicular to the flat surface S to the tyre is increased from zero, and (III) a curve (T) is obtained by plotting a displacement (Δx) in a tyre axial direction and a displacement (Δy) in a tyre radial direction of a position (A) of one of tyre tread edges (Te) closer to the flat surface (S), the displacements being from a reference position (A0) when the load (F) is zero, inclination of the curve (T), defined as the inclination of a tangent of the curve (T), increases as the load (F) increases at least in a range where the load (F) is not more than 78% of a maximum load capacity load of the tyre, wherein a height (H1) in the tyre radial direction of each of the bead apex rubbers from a bead base line (BL) is in a range of from 0.70 to 1.40 times a height (H2) in the tyre radial direction of a rim flange (Rf) of the standard rim (R) from the bead base line (BL), a distance (Lj) in the tyre axial direction between each of maximum width positions (Q) of the carcass and a center of gravity point (G) of a respective one of the bead cores is in the range of from 0.50 to 0.85 times a distance (LJ) in the tyre axial direction between each of the tread edges (Te) and the respective center of gravity point (G), a height (Hj) in the tyre radial direction of the carcass between each of the maximum width positions (Q) and the bead base line (BL) is in a range of from 0.50 to 0.85 times a height (HJ) in the tyre radial direction between each of the tread edges (Te) and the bead base line (BL), a width (wb) in the tyre axial direction of the band layer is in a range of from 0.5 to 0.95 times a tread width (TW), and the dimensions of the tyre are those specified in a standard state in which the tyre is mounted on the standard rim and inflated to the standard inner pressure, the standard rim being a wheel rim specified for the concerned tyre by a standard included in a standardization system on which the tyre is based, for example, the "normal wheel rim" in JATMA, "Design Rim" in TRA, and "Measuring Rim" in ETRTO, and the standard inner pressure being air pressure specified for the concerned tyre by a standard included in a standardization system on which the tyre is based, for example, the "maximum air pressure" in JATMA, maximum value listed in the "TIRE LOAD LIMITS AT VARIOUS COLD INFLATION PRESSURES" table in TRA, and "INFLATION PRESSURE" in ETRTO, the maximum load capacity load being a value of a maximum load capacity determined by the value of a load index "LI" displayed on the tyre, this maximum load capacity value being the maximum value of the load capacity determined for each value of the load index in the "air pressure-load capacity correspondence table" specified for the concerned tyre by a standard included in a standardization system on which the tyre is based, and the air pressure or maximum air pressure corresponding to the value of the maximum load capacity corresponds to the standard inner pressure. <EOS>