Bought my e46 320d two days ago. I thought there was a buckle/warp on my rear left hand alloy so i removed it yesterday evening, it was actaully cracked.
But while I had the wheel off, I spotted a pipe weeping oil. Its under the rear left wheel arch, i've taken a picture. I'll be taken it to a garage to get fixed but just wanna make sure its's not brake lines before I take it out again.
As your standing facing the rear left wheel arch, the pipe is too the left.