[4 Doors]

Update: I went through my dealership and they went ahead and contacted the BMW distribution center. Unfortunately, there was a revision to the weatherstripping/door edge protection in 2010. So from late 2004-2010 they had the felt (which all of us with an E90 had stock). This part # was 51727164811. Then it was superseded by the current part that does not have the felt, and instead has polyurethane. This part # is 51727247258. So if you are looking for the felt version to match your other doors, search for 51727164811. I have had no luck thus far, but if anyone finds it, please let me know!