Pad (12, 13) of a disc brake for resting on the friction surfaces (4, 5) of a brake disc, said brake disc defining an axial direction (X-X) parallel to the direction of rotation of the brake disc, a radial direction (R-R) orthogonal to said axial direction (X-X) and incident with it and a tangential or circumferential direction(T-T) orthogonal to said axial direction (X-X) and said radial direction (R-R), said radial direction (R-R) defining an inward surface, when directed towards the axial direction coinciding with the rotation axis of the disc (A-A), and an outward surface, when directed towards the opposite direction away from the axial direction coinciding with the rotation axis of the brake disc (A-A), said brake pad (12,13) comprising a support plate having a thrust surface to receive the thrust of at least one piston, and a friction surface to which a friction portion is associated, associated to said support plate to rest on a friction surface (4,5) of said brake disc, said pad comprising a support plate edge which delimits said thrust surface and friction surface, said thrust plate edge comprising an upper edge portion, substantially facing or directed outwards in the outward sense of said radial direction (R-R), said thrust plate edge comprising an upper edge portion, substantially facing or directed in the inward sense of said radial direction (R-R), said thrust plate edge comprising two lateral edge portions (21, 22) opposite each other and substantially facing or directed in the tangential direction (T-T), said lateral edge portions (21, 22) each comprising a lower lateral edge sub-portion, next to the lower edge portion, which extends by an extension less than, or equal to, a third of the longitudinal extension of said lateral edge portion (21, 22) wherein - said upper edge portion of said thrust plate edge comprises at least one tab forming a seat, open or closed, and defining a spring surface facing or directed substantially in the inward sense of said radial direction (R-R), to receive and support a thrust portion of a spring device adapted to press the brake pad with at least one thrust component directed in the outward sense of said radial direction (R-R), characterised in that all along said upper edge portion there is no upper support portion of the caliper body, superiorly avoiding the support of the plate or of the pad by the caliper body to exert a reaction to the thrust component having an outward sense of said radial direction (R-R) to the stress action of the spring device; and in that - a portion of the support plate which is delimited by said lower lateral edge sub-portion and/or by said lower edge portion, comprises a lower caliper body support portion of the plate, defining a caliper support surface supporting the plate on the caliper body to exert a reaction to the thrust component of the spring device; and in that - said caliper support surface substantially faces, or has a sense, in the outward sense of said radial direction (R-R) to rest directly or indirectly on the caliper body, so that said pad is pulled radially outwards substantially in its entire radial extension, in the outward sense. - said upper edge portion of said thrust plate edge comprises at least one tab forming a seat, open or closed, and defining a spring surface facing or directed substantially in the inward sense of said radial direction (R-R), to receive and support a thrust portion of a spring device adapted to press the brake pad with at least one thrust component directed in the outward sense of said radial direction (R-R), characterised in that all along said upper edge portion there is no upper support portion of the caliper body, superiorly avoiding the support of the plate or of the pad by the caliper body to exert a reaction to the thrust component having an outward sense of said radial direction (R-R) to the stress action of the spring device; and in that - a portion of the support plate which is delimited by said lower lateral edge sub-portion and/or by said lower edge portion, comprises a lower caliper body support portion of the plate, defining a caliper support surface supporting the plate on the caliper body to exert a reaction to the thrust component of the spring device; and in that - said caliper support surface substantially faces, or has a sense, in the outward sense of said radial direction (R-R) to rest directly or indirectly on the caliper body,