Brake check multi-platform system for checking the braking capability of a vehicle with at least two wheel axles, comprising pairs of detection platforms aligned according to a running direction on two parallel paths, spaced apart by a distance related to a vehicle axle track, each detection platform having at least a resting surface arranged with detection and measuring means apt to detect at least a horizontal component (f(i)) and a vertical component (p(i)) of a stress applied by vehicle wheels to said resting surfaces, as well as comprising at least a checking unit which determines said at least a horizontal component (f(i)) and vertical component (p(i)) of the stress along time, said at least a checking unit having data processing means apt to integrate in time said at least a horizontal component (f(i)) and vertical component (p(i)) for each wheel of said wheel axles, characterised in that said checking unit is arranged to determine also, during a braking action of said vehicle on said detection platforms, at least coordinates of a centre of gravity (C.G.) in dynamic conditions, thus defined: xb = ∑ x i * p i / ∑ p i, yb = ∑ y i * p i / ∑ p i where x(i) and y(i) are the x and y coordinates, respectively, on said resting surface of the i th wheel and p(i) is said vertical component of the stress detected for said i th wheel, and coordinates of a centre of the braking forces (C.F.) in dynamic conditions, thus defined: xf = ∑ x i * f i / ∑ f i, yf = ∑ y i * f i / ∑ f i, where f(i) is said horizontal component of stress detected for axis i, and supplying a risk condition warning proportional to a relationship between the positions of said centre of gravity (C.G.) and said centre of the braking forces (C.F.). pairs of detection platforms aligned according to a running direction on two parallel paths, spaced apart by a distance related to a vehicle axle track, each detection platform having at least a resting surface arranged with detection and measuring means apt to detect at least a horizontal component (f(i)) and a vertical component (p(i)) of a stress applied by vehicle wheels to said resting surfaces, as well as comprising at least a checking unit which determines said at least a horizontal component (f(i)) and vertical component (p(i)) of the stress along time, said at least a checking unit having data processing means apt to integrate in time said at least a horizontal component (f(i)) and vertical component (p(i)) for each wheel of said wheel axles, characterised in that said checking unit is arranged to determine also, during a braking action of said vehicle on said detection platforms, at least coordinates of a centre of gravity (C.G.) in dynamic conditions, thus defined: xb = ∑ x i * p i / ∑ p i, yb = ∑ y i * p i / ∑ p i where x(i) and y(i) are the x and y coordinates, respectively, on said resting surface of the i th wheel and p(i) is said vertical component of the stress detected for said i th wheel, and coordinates of a centre of the braking forces (C.F.) in dynamic conditions, thus defined: xf = ∑ x i * f i / ∑ f i, yf = ∑ y i * f i / ∑ f i, where f(i) is said horizontal component of stress detected for axis i, and supplying a risk condition warning proportional to a relationship between the positions of said centre of gravity (C.G.) and said centre of the braking forces (C.F.).