Abstract: A tipping trailer having forward and rear ends and a longitudinal axis and including a trailer bed (14), longitudinally spaced wheel assemblies (16,17) for supporting the rear end of the trailer bed (14), pivotally mounted arm element (19) coupling the trailer bed (14) to the longitudinally spaced wheel assemblies (16,17), the arm element (19) has a rearward pivotal connection (21) and a forward pivotal connection (20) such that as the trailer bed (14) is tipped the longitudinally spaced wheel assemblies (16,17) remain in ground contact during tipping of the trailer bed (14) with the load distributed evenly across the longitudinally spaced wheel assemblies (16,17).