Wow. Just came across this forum and figured I would post this question myself. I just got a 1 year old 128ci, it has sport package with manual seats, and NO LUMBAR support.
My wife and I took a 2 hour trip, and she wants me to return the car! I love how it drives, but the small of my back, and hers are killing us. She put a small pillow behind her and it helps, but that won't work for me.
Does anyone have any suggestions besides purchasing a new seat? Thanks.