WHICH MULTIMEDIA SYSTEM TO CHOOSE FOR YOUR BMW 5 SERIES E39?

 The 5 Series E39 is a highly prized BMW for youngtimer enthusiasts. If its line has not aged, if its interior remains very comfortable, it generally does not have a multimedia system. Its original car radio is totally obsolete, compared to new on-board multimedia technologies. Contrary to certain received ideas, it is possible to put a high-tech car radio on the E39 without altering or modifying the vehicle.