A suspension assembly for supporting a longitudinally extending vehicle frame rail of a vehicle, comprising: a frame hanger having a frame attachment portion (15a, 15b) adapted for mounting to the vehicle frame rail; an axle attachment member (33, 35) mounted to a first vehicle axle; a first control arm having a first end mounted to, and extending from, a first frame hanger boss positioned on the frame hanger, and a second end mounted to the axle attachment member; and a second control arm having a first end mounted to a second frame hanger boss positioned on the frame hanger, and a second end mounted to the axle attachment member; wherein, when in use supporting the longitudinally extending vehicle frame rail of the vehicle: the second control arm extends from a centerline of the first control arm at an angle alpha so that the first control arm and the second control arm are not parallel to each other; the angle alpha is from about 9 degrees to about 23 degrees; the first control arm has a centerline that extends from the first end of the first control arm to the second end of the first control arm; the second control arm has a centerline that extends from the first end of the second control arm to the second end of the second control arm; the centerline of the first control arm and the centerline of the second control arm extend to intersect at a point that is at a virtual center of rotation; the frame hanger is positioned between the virtual center of rotation and the axle attachment member (33, 35); the virtual center of rotation is located from about 35 inches (0.889m) to about 50 inches (1.27m) from a centerline of the first vehicle axle; the centerline of the first vehicle axle is positioned at a distance D from a centerline of a second vehicle axle, and the virtual center of rotation is positioned at a distance that is 77% to 91% of distance D from the first axle; and a distance between the second end of the first control arm and the second end of the second control arm where they are mounted to the axle attachment member (33, 35) is greater than a distance between the first end of the first control arm and the first end of the second control arm where they are mounted to the first and second frame hanger bosses (19b, 18b) positioned on the frame hanger. a frame hanger having a frame attachment portion (15a, 15b) adapted for mounting to the vehicle frame rail; an axle attachment member (33, 35) mounted to a first vehicle axle; a first control arm having a first end mounted to, and extending from, a first frame hanger boss positioned on the frame hanger, and a second end mounted to the axle attachment member; and a second control arm having a first end mounted to a second frame hanger boss positioned on the frame hanger, and a second end mounted to the axle attachment member; the second control arm extends from a centerline of the first control arm at an angle alpha so that the first control arm and the second control arm are not parallel to each other; the angle alpha is from about 9 degrees to about 23 degrees; the first control arm has a centerline that extends from the first end of the first control arm to the second end of the first control arm; the second control arm has a centerline that extends from the first end of the second control arm to the second end of the second control arm; the centerline of the first control arm and the centerline of the second control arm extend to intersect at a point that is at a virtual center of rotation; the frame hanger is positioned between the virtual center of rotation and the axle attachment member (33, 35); the virtual center of rotation is located from about 35 inches (0.889m) to about 50 inches (1.27m) from a centerline of the first vehicle axle; the centerline of the first vehicle axle is positioned at a distance D from a centerline of a second vehicle axle, and the virtual center of rotation is positioned at a distance that is 77% to 91% of distance D from the first axle; and a distance between the second end of the first control arm and the second end of the second control arm where they are mounted to the axle attachment member (33, 35) is greater than a distance between the first end of the first control arm and the first end of the second control arm where they are mounted to the first and second frame hanger bosses (19b, 18b) positioned on the frame hanger.