I’m presuming the 17s would add a bit more comfort around town but a bit more road noise on A roads and motorways?.
Higher profile tyres would offer a more comfortable driving experience on/off the motorway and better noise insulation on the motorway and obviously better rolling resitance. That said I don’t know what profile tyres they use on the 17’s.
See if you can request an extended test drive in the Advance/Ultimate, that way you can see the difference yourself! At the same time, you can all pile in, as if you were camping without the dealer scratching his head 😂
You could also look at the new i5 if they have one in the showroom and see if they have one to test drive, where you can all pile in again!
Another Kezo’s top tip – Deliveries of the refresh EV6 will start in Q3, so you may bag a bargain AP on remaining outgoing stock come Q3.