hey, I own a G30 540i xDrive and have bought a G30 M5 steering wheel to retrofit my old/existing M Package steering wheel and add heating to it.
In terms of buttons, my old steering wheel looks identical to your M5 F90 steering wheel. The new G30 M5 steering wheel has the buttons in the new design (more buttons, the tiny "scrolling wheels" are now metal instead of plastic, etc).
I have been told that it should be a direct swap (minus the heating part), but it is not. All buttons work, minus the ones related to cruise control and driver assistant plus auto-steering thing. When pressed, they pop an error in iDrive.
Any ideea what this is about?
Have made a small video of it too