Hi again Keener
I just went down to the garage and got under my G11.
Pete was correct, measured my filter, 76mm by 14 flutes.
So, I have the wrong cup on it's way, anyway only $3.34.
I have just revisited the site mentioned above and they have a BMW one , they say it's 74mm by 14 flutes, not 76 as mentioned but I ordered this one hoping that there is some taper in all this and it will do the job.
This one is $3.49 AUD, about $3.00US.
All will be revealed when they arrive.