Motor vehicle forecarriage comprising - a forecarriage frame, - a pair of front wheels (10', 10") kinematically connected to the forecarriage frame by means of an articulated quadrilateral, - said articulated quadrilateral comprising a pair of cross members (24', 24"), hinged to the forecarriage frame in correspondence of middle hinges, - said cross members (24', 24") being connected together, in correspondence of opposite transverse ends (40, 44), by means of uprights ( 48', 48'') pivoted to said transverse ends (40, 44) in correspondence of side hinges, - the cross members (24', 24'') and the uprights ( 48', 48'') defining said articulated quadrilateral, wherein - each of the uprights ( 48', 48") guides and supports a stub axle of a respective front wheel (10', 10''), each upright ( 48', 48'') extending from an upper end to a lower end, - wherein each stub axle is mechanically connected to a rotation pin of the respective front wheel (10', 10'') so as to rotatably support the respective front wheel (10', 10'') around a rotation axis (R-R), and wherein each rotation pin of the respective front wheel (10', 10'') is comprised between the upper end and the lower end of the corresponding upright ( 48', 48'') of the articulated quadrilateral, wherein the forecarriage comprises at least one bracket, connected to the respective stub axle of the respective front wheel (10', 10'') and steering levers of the forecarriage, so as to control the rotation of the stub axles about the respective steering axis (S-S) of each front wheel (10', 10"), wherein said bracket supports braking means for the respective front wheel (10', 10"); wherein left and right uprights (48', 48'') rotatably support left and right front wheels (10', 10''), respectively, around respective steering axes (S'-S', S''-S'') parallel to each other; and wherein the middle hinges and the side hinges are parallel to each other and are oriented so that, with respect to a projection plane passing through said middle hinges, the steering axes (S'-S', S"-S") identify, with the axes of the middle hinge (W-W) and side hinge (Z-Z), an angle (α), characterized in that said angle α defined between the steering axes (S'-S', S"-S")and the axes (W_W, Z_Z) of the middle hinges and the side hinges is equal to 100 degrees. - a forecarriage frame, - a pair of front wheels (10', 10") kinematically connected to the forecarriage frame by means of an articulated quadrilateral, - said articulated quadrilateral comprising a pair of cross members (24', 24"), hinged to the forecarriage frame in correspondence of middle hinges, - said cross members (24', 24") being connected together, in correspondence of opposite transverse ends (40, 44), by means of uprights ( 48', 48'') pivoted to said transverse ends (40, 44) in correspondence of side hinges, - the cross members (24', 24'') and the uprights ( 48', 48'') defining said articulated quadrilateral, wherein - each of the uprights ( 48', 48") guides and supports a stub axle of a respective front wheel (10', 10''), each upright ( 48', 48'') extending from an upper end to a lower end, - wherein each stub axle is mechanically connected to a rotation pin of the respective front wheel (10', 10'') so as to rotatably support the respective front wheel (10', 10'') around a rotation axis (R-R), and wherein each rotation pin of the respective front wheel (10', 10'') is comprised between the upper end and the lower end of the corresponding upright ( 48', 48'') of the articulated quadrilateral, wherein the forecarriage comprises at least one bracket, connected to the respective stub axle of the respective front wheel (10', 10'') and steering levers of the forecarriage, so as to control the rotation of the stub axles about the respective steering axis (S-S) of each front wheel (10', 10"), wherein said bracket supports braking means for the respective front wheel (10', 10"); wherein left and right uprights (48', 48'') rotatably support left and right front wheels (10', 10''), respectively, around respective steering axes (S'-S', S''-S'') parallel to each other; and wherein the middle hinges and the side hinges are parallel to each other and are oriented so that, with respect to a projection plane passing through said middle hinges, the steering axes (S'-S', S"-S") identify, with the axes of the middle hinge (W-W) and side hinge (Z-Z), an angle (α), characterized in that said angle α defined between the steering axes (S'-S', S"-S")and the axes (W_W, Z_Z) of the middle hinges and the side hinges is equal to 100 degrees.