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Size comparison between '24 and '26 Formula 1 cars
(lemmy.blackeco.com)
This is a screenshot from F1TV's Tech Talk, I believe this is the best size comparison I have seen since the reveal last Thursday.
At first glance the difference in width comes from the front wings, which protruded beyond the wheels in the '22 cars.
So hopefully the wings last longer in wheel to wheel action.
IMO the new reg renders make the front wing look deceptively small because of the geometry. They are still huge but as you say it looks like they no longer protrude past the wheel. Still looks like something fairly easily broken in wheel to wheel battles but maybe it'll hold up.