Overall not bad, interesting idea and the second(black) set of wheels is awesome
As for the things I see:
-The light bar is a bit off. The left side should go a bit down or the right a bit up
-The barrels of the wheels have a white-ish reflection from the spokes in the second picture(shouldn't be, since the spokes are black)
-The front tire seems cut by the fender at the top(it's too much even if for bags), a little less shadow on it would be better(this is just on the second pic, black wheels)
-On the passenger side, you left the door pillar and the B pillar, while on the drivers side, you cut the B pillar
-The overfenders could be better fitted, especially the front one and the little canards could use some shadow
-The pod filter is a bit small and too much shadow is on it
-The passenger side brake duct(vent next to the oil cooler) looks a bit strange and not the same as the drivers side one
-The car is too bright for the bg, bg has more contrast
I have no intention of being an ass, and some of the above things could be wrong, but that's what I see
And the second one looks better in my opinion