There are a number of extensive write-ups including pictures of rust on-forum here. The hideous nature of what rust can do to these fine cars was a learning experience here for me. I was tempted to keep a family heirloom in the late '90s, a '77 240D that my Father and Mother had bought new, with approx. 375K miles on it. ALL four rocker-panels / fender bottoms had been 'patched-up' by a body shop years before, and they were again bubbling the paint-up in the process of the rust continuing when I realized that it was a rust-pit, with A LOT of miles on it. I just didn't have the need or attraction to keep something like that around, even if it was available for free. It is heartbreaking to let a car go, but that's my experience with a 240D that was part of our family.