I alternated the design and layout of this car a little due to not wanting to replicate the other RS skins around. Presents its self nicely in-game, I think..
Maybe just the tire camber making them look a bit deeper dished. Isnt it impossible to modify S2 car's rims? I vaguely remember looking into it but pretty sure it ended up only being my XRG rims that I had any luck with.
edit: ah! custom tyre texture and discs, but I think that's it.