The E60 and E63/4 were renowned for their sure-footed handling and exceptional build quality. But brake rotors on bigger cars can also become easily worn, reducing their effectiveness. To ensure the braking performance of your 5 Series is upheld, we recommend replacement with Zimmermann discs. As an original equipment supplier to BMW, Zimmermann's discs are manufactured to the highest standards and come with their own Z-Coat to prevent the common problem of surface rust. Made in Germany.