Thanks for the replies guys...

The thing that gets me is that the profile will affect diameter of the tyre/wheel? - not the width and how much it may or may not stick out?

If it helps the tyres are Bridgestone Adrenalins.

Thing is - I've had other 16x7 inch rims on my car with same profile - and same problem that it sticks out slightly. Tyres were Falken Azenis RT-215.