Abstract: The method of manufacturing a brake pad assembly for use in a disc brake assembly, comprises the following steps: providing a backing plate defining distinct shim and friction pad surfaces, the backing plate destined to carry a friction pad on the friction pad surface and comprising at least one recess on the backing plate shim surface, the recess defining an inner peripheral wall having a top rim; providing a shim defining an abutment surface; applying the shim abutment surface against the backing plate shim surface; and forcing the shim to deform locally into the recess and against the recess inner peripheral wall so that a shim lip projecting transversely away from the shim abutment surface will be forced to deform towards the recess inner peripheral wall to become pressure-fitted within the recess thereby securing the shim to the backing plate.