Technical Analysis: WRC Cars 2017

[J_n_z]

... the rules specifying stepped floors for the F1 cars (that's pretty much what I do for living). ...
Nick

I like this...

@ Yaris: You didn't mentioned Yaris "nose up" floor design.
Look:

https://www.google.si/imgres?imgurl=...:&vet=1&w=1280
https://www.google.si/imgres?imgurl=...:&vet=1&w=1280
https://www.google.si/imgres?imgurl=...M:&vet=1&w=640
http://cdn-9.motorsport.com/images/m...ota-racing.jpg
https://www.google.si/imgres?imgurl=...M:&vet=1&w=790

It looks like it is purposefully made to receive air under the floor... ground effect in mind.

I see the "side skirts" diffusers looks like a clever trick, but I don't understand why the front part of the skirts is cut away, is there aerodynamic purpose or a mechanic (rocks flying) one.

@ general underfloor aero: I think, we can not be sure that floor generated downforce is a vital part of car performance. Hyundai rear suspension cover were floating massively. As far as I can understand this should kill all floor aero performance.
https://www.youtube.com/watch?v=gwyGvSPtgJ8 (0:41 to 0:47)