E9 Coupe Rust Diagrams

Upper Nose Panel and Lower Valance:

This area can be rusty on the underside of the upper nose panel without showing signs of rust from the top. Its also difficult to see without taking the grilles off, but you can shine a flashlight down inside the holes on the upper panel and get a good idea of the area. This area isn't as common as other areas for rust.

Most of the water and moisture that causes the problem in this area comes from the topside, usually from being exposed to rain. Some moisture can also enter from the front while driving in the rain.

The lower valance typically gets its moisture from the front and may sit in areas that collect dirt and debris. Its important to periodically check this area and keep in clean.