Best is to bring it to Nissan dealer and log a complaint. Dealers get special bulletins which are not published publicly. It’s covered under warranty then why guess.
Mostly in 2nd and 3rd gear ( 3rd and 4th on auto with paddle shifters ) you can go up to 6k - 7k rpm. But you’ll hit 90+ in seconds. keep an eye out for red/blue flashing lights in the rear view mirror. ;)
We all have different preferences and tastes, hence there are more than one auto makers and models! beauty and value of an object is in the eye of the beholder! Post some pics of new Z4 and have fun!
I agree. Looks slightly on bigger side. on the black panel slightly grey shade might look better. even now it looks ok, since yours is the only one that has it and one maybe able to see it from little distance to be aware of the twin turbo. ;)