Really depends on the tyre brand and model. This was 195/40 Pirelli Pzero Nero on 17x8 that I had for my Mk3 ages ago:



And more recently the same specs but Kumho KU31 for the front tri-spokes on my A3:



And then I had 215/40 Goodyear F1 Eagles on 17x8:



If you go for 205/40 or wider and want to avoid as much rubbing as possible, just avoid Yokohamas and Potenzas as they tend to have thicker sidewalls.