A stabilising arrangement to support an object above four ground engaging means (2c, 3c, 4c, 5c), the arrangement including: an interconnection means interconnecting four lever parts (2, 3, 4, 5) including a first lever part, a second lever part, a third lever part and a fourth lever part, each respective lever part (2, 3, 4, 5) being connected to the interconnection means by a respective pivot (7a, 7b, 7c, 7d) having a respective pivot axis (7a', 7b', 7c', 7d'); each respective lever part (2, 3, 4, 5) including a first engaging region (2d, 3d, 4d, 5d) and a second engaging region (2e, 3e, 4e, 5e), the first engaging region (2d, 3d, 4d, 5d) of each respective lever part (2, 3, 4, 5) being located on an opposite side of the respective pivot axis (7a', 7b', 7c', 7d') to the second engaging region of the respective lever part (2, 3, 4, 5) in plan view; each respective ground engaging means being attached to or integral with a respective lever part (2, 3, 4, 5), the respective ground engaging means (2c, 3c, 4c, 5c) of each lever part (2, 3, 4, 5) being located on an opposite side of the respective pivot axis (7a', 7b', 7c', 7d') to the respective first engaging region; the first engaging region of the first lever part, in use engaged with the second engaging region of the second lever part, the first engaging region of the second lever part, in use engaged with the second engaging region of the third lever part, the first engaging region of the third lever part, in use engaged with the second engaging region of the fourth lever part, the first engaging region of the fourth lever part, in use engaged with the second engaging region of the first lever part such that rotation of the first lever part drives a rotation of the second lever part which drives rotation of the third lever part in a substantially opposite direction to the first lever part and the rotation of the third lever part driving a rotation of the fourth lever part in a substantially opposite direction to the second lever part to permit a warp displacement of the four ground engaging means (2c, 3c, 4c, 5c), the stabilising arrangement thereby providing support of the object on uneven ground, and for each respective lever part (2, 3, 4, 5), the distance between the respective ground engaging means (2c, 3c, 4c, 5c) and the respective pivot axis (7a', 7b', 7c', 7d') is a primary lever-rotating moment arm (a) measured in a plane parallel to the average ground plane and in a direction perpendicular to the respective pivot axis, and for each respective lever part (2, 3, 4, 5), the distance between the respective ground engaging means (2c, 3c, 4c, 5c) and a portion of the respective pivot is a friction loading distance (b) measured parallel to the respective pivot axis, and characterised in that the friction loading distance (b) is greater than or equal to the primary lever-rotating moment arm (a). an interconnection means interconnecting four lever parts (2, 3, 4, 5) including a first lever part, a second lever part, a third lever part and a fourth lever part, each respective lever part (2, 3, 4, 5) being connected to the interconnection means by a respective pivot (7a, 7b, 7c, 7d) having a respective pivot axis (7a', 7b', 7c', 7d'); each respective lever part (2, 3, 4, 5) including a first engaging region (2d, 3d, 4d, 5d) and a second engaging region (2e, 3e, 4e, 5e), the first engaging region (2d, 3d, 4d, 5d) of each respective lever part (2, 3, 4, 5) being located on an opposite side of the respective pivot axis (7a', 7b', 7c', 7d') to the second engaging region of the respective lever part (2, 3, 4, 5) in plan view; each respective ground engaging means being attached to or integral with a respective lever part (2, 3, 4, 5), the respective ground engaging means (2c, 3c, 4c, 5c) of each lever part (2, 3, 4, 5) being located on an opposite side of the respective pivot axis (7a', 7b', 7c', 7d') to the respective first engaging region; the first engaging region of the first lever part, in use engaged with the second engaging region of the second lever part, the first engaging region of the second lever part, in use engaged with the second engaging region of the third lever part, the first engaging region of the third lever part, in use engaged with the second engaging region of the fourth lever part, the first engaging region of the fourth lever part, in use engaged with the second engaging region of the first lever part such that rotation of the first lever part drives a rotation of the second lever part which drives rotation of the third lever part in a substantially opposite direction to the first lever part and the rotation of the third lever part driving a rotation of the fourth lever part in a substantially opposite direction to the second lever part to permit a warp displacement of the four ground engaging means (2c, 3c, 4c, 5c), the stabilising arrangement thereby providing support of the object on uneven ground, and for each respective lever part (2, 3, 4, 5), the distance between the respective ground engaging means (2c, 3c, 4c, 5c) and the respective pivot axis (7a', 7b', 7c', 7d') is a primary lever-rotating moment arm (a) measured in a plane parallel to the average ground plane and in a direction perpendicular to the respective pivot axis, and for each respective lever part (2, 3, 4, 5), the distance between the respective ground engaging means (2c, 3c, 4c, 5c) and a portion of the respective pivot is a friction loading distance (b) measured parallel to the respective pivot axis, and characterised in that the friction loading distance (b) is greater than or equal to the primary lever-rotating moment arm (a).