Abstract: A brake dust particle filter for a disc brake assembly with a brake disc and a brake caliper is provided, the brake dust particle filter being configured to collect particles resulting from braking, wherein the brake dust filter comprises: a housing comprising a first and a second side wall which are arranged opposite to each other and a peripheral wall connecting the first and the second side wall; wherein the first side wall comprises at least one guiding element protruding towards the second side wall within the housing, the guiding element having a face which is arranged opposite to a peripheral wall section of the peripheral wall; and the brake dust particle filter is configured to accommodate the brake disc between a distal edge of the guiding element and the second side wall.