You don't have to do anything. In fact, the black coating on the brake side of our AC35 can wear off over time, which we already point out in the product description. However, this is merely optical wear and tear and not damage. Due to the material, this cannot be avoided. However, this is not possible with our carbon wheelsets, as the material of the wheel is black, whereas the aluminium wheelsets are silver-coloured and black-coated or anodised. With rim brakes, this can lead to wear of the brake flanks. Riding in the rain can accelerate this effect.