Well honestly guys, I was just like you in thinking the dimensions would be my silver bullet in getting the job done. If I had found the dimensions somewhere I would have ended up changing them. Measuring the compartment in your X5 is the easiest part of this project. I honestly have no confidence my dimensions would work for another X5 or vice versa you just gotta go in there and measure around your wires and whatever else you have in that space. It takes about 5 minutes.