Hello all, Tarraco 2021er, 19-wheels. Rear brakes: factory brake disc rusts and grinding noise. When braking whether hard or gentle it simply grinds ONLY while braking. And on the brake disc the outer edge is about 2cm thick with rust.. the friendly one of Seat said, I should brake harder but I see as a loan that this edge is longer than 500km. The brake discs + accessories should be OK according to him, have now driven 43,000km. had you that also sch sch on? Maybe the factory brake covers/accessories are defective or too small for these discs.. Thanks already, pictures are included.