Originally Posted by 00bygrees
are the base stereo underseat subwoofers 6" or 8"?
I'm not sure what the car comes with as standard...or whether this was an upgradable part from BMW?
Basically one of the underseat subs in my 335i is rattling a bit...I'm contemplating upgrading to earthquake or similar, but might look at getting an OEM initially as a quick fix. Any way I could check whether these would be the same without taking off my car seat?
These subs are 8".
If your car has the bog standard stereo then these are the underseat subs which would have been fitted from factory.
Optional stereos on e9X are BMW Business, BMW Professional/DSP/Logic 7/HK, and Individual Audio.