A suspension system (10;90) for mounting an axle to a longitudinally extending vehicle structure (20;91) having a longitudinally extending centerline, said suspension system comprising: a pair of transversely spaced frame brackets, each of said frame brackets being mounted on and depending from said vehicle structure, each of said frame brackets having an air spring attachment plate and one or more mounting points located along the perimeter of the bracket; a pair of suspension arms (40;100) transversely spaced, each suspension arm having a first end (44;114) and a second end (46;96), each of said suspension arms being attached to said axle; a first pair of transversely spaced air springs (50;112), each of said air springs being mounted to the first end (44;114) of a respective said suspension arm (40;100) and to the air spring attachment plate of a respective said frame bracket, the air spring (50;112) extending generally upwardly from the suspension arm to the attachment plate; a pair of second suspension system components (48;98), each of said second components being mounted to a said suspension arm (40;100) and also attached to one (27;24) of said mounting points on a respective said frame bracket, and a second pair of transversely spaced air springs (56;92) longitudinally spaced apart from said first pair of air springs (50;112), each of said second pair of air springs being mounted on the second end (46;96) of a respective said suspension arm (40;100), each of said second pair of air springs (56;92) extending upwardly and being attached to said vehicle structure (20;91), characterized in that each of said first ends (44;114) of said suspension arms (40;100) is angled towards said centerline of said vehicle structure, and the air spring attachment plate of each said frame bracket extends inboard from the frame bracket towards the centerline of said vehicle structure. a pair of transversely spaced frame brackets, each of said frame brackets being mounted on and depending from said vehicle structure, each of said frame brackets having an air spring attachment plate and one or more mounting points located along the perimeter of the bracket; a pair of suspension arms (40;100) transversely spaced, each suspension arm having a first end (44;114) and a second end (46;96), each of said suspension arms being attached to said axle; a first pair of transversely spaced air springs (50;112), each of said air springs being mounted to the first end (44;114) of a respective said suspension arm (40;100) and to the air spring attachment plate of a respective said frame bracket, the air spring (50;112) extending generally upwardly from the suspension arm to the attachment plate; a pair of second suspension system components (48;98), each of said second components being mounted to a said suspension arm (40;100) and also attached to one (27;24) of said mounting points on a respective said frame bracket, and a second pair of transversely spaced air springs (56;92) longitudinally spaced apart from said first pair of air springs (50;112), each of said second pair of air springs being mounted on the second end (46;96) of a respective said suspension arm (40;100), each of said second pair of air springs (56;92) extending upwardly and being attached to said vehicle structure (20;91), characterized in that each of said first ends (44;114) of said suspension arms (40;100) is angled towards said centerline of said vehicle structure, and the air spring attachment plate of each said frame bracket extends inboard from the frame bracket towards the centerline of said vehicle structure.