The invention relates to a machine for spreading materials on the ground. The inventive machine comprises a structural assembly which is disposed on three independent wheel assemblies (2, 3, 4) which can be individually and selectively connected to a hydraulic drive system. The aforementioned structural assembly comprises a head (10) for distributing and levelling the materials to be applied, which is arranged such that it can move laterally in relation to the mounting position at the front of the machine.