BMW E90, 91, 92, 93 Underseat Sub Enclosures
Worth thinking about for anyone considering an underseat upgrade in the future and wants to eventually return the car to original. The newer cars speakers are glued in not screwed so you have to butcher the original sub on removal. Got myself a couple in the garage for my own project, these are well priced, normally appear for £50 each side plus postage!
F31 335d M Sport XD - Mineral Grey - Coral Red - 19" 442M - HK Audio - M Sport Plus Pack - Heated Seats