RE: There is a new sat nav mount at Wunderlich available! - 2

Looks more stabile that some of the other mounts (hornig).

As I understand it the BMW connected app provides its own mapping function and map data to allow the turn based navigation. As far as I know you cannot drive this from any other satnav app.

I suspect that will also be case with the new larger display on the RT which allows you to have a map display rather than just turn arrows.

In that case I would be asking myself who is likely to provide the best and most up to date satnav functionality - BMW or a specialist like TomTom or Garmin, or my favourite, MyRoute. In particular I would want to know if it is possible to pre-plan routes and load them into the BMW app.