How about a damper driver seat system just to cope with the porpoising/bouncing/bottoming issues? I think that if W13 were faster than RB18 they would not be moaning so much about it, isn`t it?
Then, from the Baku pictures: could be that RB18`s floor is designed to have a linear shape to withstand a speed until proposing is occurring, then have a slope that with in conjunction to a higher rake than any other car to still produce more downforce out from diffuser rather than Venturi tunnels?
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