Abstract: The invention provides a method of increasing the ventilation in a ventilated disc brake comprising a friction ring 2 and a bell mount 12 defining an internal cavity, by fastening in the cavity an axially inner ventilating structure 200 separate of the friction ring 2 which has vanes 208a, 208b defining channels 209a, 209b aligned with those of the disc brake. The ventilating structure 200 can have a thinner cross section, a lower density, and/or a lower thermal conductivity, than the friction ring 2. The mount additionally or alternatively includes a ventilator comprising vanes 328a, 328b defining channels 329a, 329b arranged to blow air outwardly from the interior of the cavity in a radial direction towards the caliper 4.