Method for obtaining a load applied to a tyre casing in rolling conditions, in a wheel mounted state in order to form a mounted assembly, said tyre casing having a crown, two sidewalls and two beads revolving about a natural axis of rotation and a median plane, the intersection of the median plane and the natural axis of rotation defining a wheel centre, comprising the following steps: - fastening at least one sensor to the tyre casing in line with the crown having a radial position R relative to the natural axis of rotation in its mounted state and being able to generate at least one output signal proportional to the acceleration experienced by said sensor in the tyre casing; - placing the mounted assembly in rolling conditions at a rotation speed W, subjected to a load Z; - acquiring at least one first signal (1, 1bis) of the abscissa u comprising at least the amplitude of the acceleration in the direction normal to the crown while rolling at the rotation speed W; - determining a reference acceleration γ reference (4, 6) that is a function of the rotation speed W and of the position of the at least one sensor; - identifying a first series of increments I, corresponding to the abscissa u of the at least one first signal where the first signal crosses a threshold value B (3, 5); - delimiting the first signal (1, 1bis) between a first increment I min and a second increment I max so as to construct a wheel revolution signal Sig TdR (2, 7, 10); - defining at least one first energy density S that is a function of the wheel revolution signal Sig TdR (2, 7, 10), and of the reference acceleration γ reference (4, 6), denoted S + when the wheel revolution signal is above a threshold value A, or denoted S - when the wheel revolution signal (2, 7, 10) is below or equal to said threshold A; - identifying the deformation experienced by the tyre casing Def %, as a function of the reference acceleration γ reference (4, 6) and of the first energy density S; - determining the load Z applied to the mounted assembly using a bijective function F (1001, 1002, 1003) comprising at least the deformation of the tyre casing Def % as a parameter. - fastening at least one sensor to the tyre casing in line with the crown having a radial position R relative to the natural axis of rotation in its mounted state and being able to generate at least one output signal proportional to the acceleration experienced by said sensor in the tyre casing; - placing the mounted assembly in rolling conditions at a rotation speed W, subjected to a load Z; - acquiring at least one first signal (1, 1bis) of the abscissa u comprising at least the amplitude of the acceleration in the direction normal to the crown while rolling at the rotation speed W; - determining a reference acceleration γ reference (4, 6) that is a function of the rotation speed W and of the position of the at least one sensor; - identifying a first series of increments I, corresponding to the abscissa u of the at least one first signal where the first signal crosses a threshold value B (3, 5); - delimiting the first signal (1, 1bis) between a first increment I min and a second increment I max so as to construct a wheel revolution signal Sig TdR (2, 7, 10); - defining at least one first energy density S that is a function of the wheel revolution signal Sig TdR (2, 7, 10), and of the reference acceleration γ reference (4, 6), denoted S + when the wheel revolution signal is above a threshold value A, or denoted S - when the wheel revolution signal (2, 7, 10) is below or equal to said threshold A; - identifying the deformation experienced by the tyre casing Def %, as a function of the reference acceleration γ reference (4, 6) and of the first energy density S; - determining the load Z applied to the mounted assembly using a bijective function F (1001, 1002, 1003) comprising at least the deformation of the tyre casing Def % as a parameter.