Don't get mad, I'll just say..
Car perspective is different from the image.
Rims suck (hahaha).
Play with levels, where it should be dark it's so bright. Go to PS and cntrl+L and then the middle thing, drag it to about 0,65.
The interior of the rim (I mean next to brake disc) should be darker. Ambient occlusion should work.
Anyway, I like this scene xD
wont get mad. there was a color correction option when rendering,like a curve i could of adjusted,but after 5 hours i just wanted to get it out or my pc
besides i suck with photoshop,thats why all my renders are raw from 3ds max. except the xrt burnout,but thats just smoke brush thats easy to do
learning more about this renderer
it's getting better
(this renderer keeps rendering forever until you stop. I stopped it after 10 hours but I didn't like the result, I should let it rendering more hours next time :shrug