Hi guys,
Thank you all very much for your response!
As we have seen we have two types of R1100R's, the original one and the newer one with the redesigned dingle. For the original one the RAM mount seems to be a good option, but this option is not possible for my newer R1100R. The best "out of the box" option for the newer one should be the one from Gadgetguy:
http://1.1.1.2/bmi/us.st12.yimg.com/us. ... 041_849070
I don't like to have my heavy Zumo connected to the side mirror so I do not like the mirror-mount option. Also I can't believe it is possible to have a mount fitted on the mirror! I have thought about mounting the Zumo to my windscreen by creating a new bar between the two upper windscreen mounting bars. This has to be the best possible spot to have the Zumo. Or should there be an option to drill a hole in the screen for connecting a mount?
The last option I thought about is ordering a new steering bar from Wunderlich. This is a more regular steering bar model what makes it possible to mount all kinds of devices very easy.

Additional benefit will be that the position of the handles will be a little more backwards what, I hope, wil allow me to sit in a more comfortable upright position. Disadvantage will be that I will need to think of a new solution for mounting my windscreen. Why do I have a windscreen anyway?
Cheers
Sven71