The invention relates to a brake disc (1) comprising a support cap (2), which is intended to be connected to a wheel hub of a vehicle, and a braking band (3), which is intended to cooperate with a caliper of the disc brake. The braking band comprises two plates (31, 32) which are connected by a plurality of connecting members (33) that define ventilation ducts (34). The brake disc is characterized in that, a plurality of the connecting members having different shapes and/or dimensions are arranged according to a module (M) which repeats itself an integral number of times along the braking band.