Stupid question amnesty, please.
Why does a 2 litre family saloon have 225/45/17 tyres?
My 2 litre family estate has 185/65/14s and I find those overkill.
Partly because "powerful visual stance" or some such marketing bullshit and partly because cars are designed by morons and lack decent handling characteristics, which they make up for by putting ultra-wide tyres on so there is loads of grip (which peope mistake for good handling) right up until there suddenly isnt and you have no fucking hope in hell of correcting the slide.
Its all a moot point anyway. Give it another three or four years and "tyre particulates" will be the new thing killing everyone, and we will have to either go back to 145s or some new and "improved" technology with fantastic eco green cred, but will likely be worse overall anyway.