Originally Posted by BWT
The subs for the standard audio system in the E90 LCI is 4 ohm. I replaced mine and the sticker on the back of the original subs says that it is 4 ohm.
Yeah just checked mine, also 4ohm. I believe it's the "Hifi" model in the US that comes with the 2ohm version. The Hifi model fits in between the stereo and Logic7 system and includes an amp and some additional speakers over the stereo system. I think this is standard kit for the US post 2011 or something like tht, unfortunately we never had the option in Aus.