17x7 or 16x7 for me. Personally I went for 17s. Fractionally heavier but lots of tyre options, and I quite like the cartoonish oversized wheel look on the ND.
I’m more into unsprung weight reduction than ultimate grip. The wider the tyre the less light on its feet it feels (or at least that was my experience with my NA), and I like the car to be entertaining at legalish speeds.