Well that's kinda what I'm saying, I can't see 23 being faster, but we still talk about 'compromise' between speed and comfort when discussing wider tyres.
we still talk about 'compromise' between speed and comfort when discussing wider tyres.
There is a compromise. You're only considering rolling resistance. 42mm tyres are significantly less aero than 23mm and this will be a not insignificant drag at higher speeds.
I think it’s likely your conception of speed is skewed.
23mm feel a hella lots faster but in reality it fits the opposite.
42mm feel hella slow cause there’s little to no road buzz at a lower pressure, but actually do the opposite.