Originally Posted by
Branko D
Probably none, and aero road bikes wouldn't be a thing, either, even if it matters more than weight, and tires and wheels wouldn't be getting wider and deeper, most likely, either. You can easily feel weight, unlike, say, aerodynamics which is invisible.
Pro bikes would be probably around 5ish kg
Wind might be invisible, but I can definitely feel it! Climbing race bikes would be considerably lighter for sure, but there would most definitely still be aero race bikes that would be a little heavier for aero gains. Wider tyres would also still exist as ride quality is pretty important when riding on crappy roads. I wouldn't even consider buying any bike that couldn't fit at least 32 mm tyres, regardless how light it was.