you already know i love your stuff. so i will freely criticise you and knock you down off the high horse: top dwg, cougar. front wheel looks a bit smallish and squishy. wheel looks deflated, sad, depressed, too much 'positive camber.'
middle car, red: spokes of front rim are not equidistant. you're not far off, but it is not exact. my eye goes immediately to that wheel and is uncomfortable with an otherwise excellent rendering.
green car: my favorite of these. awesome.
ok. back on the high horse for you.