It looks like you used the hue/saturation adjustement to make the wheels gold. It'd be better if you use a very light gold color and brushed over the wheels then set the brushed layer to "hue".
Here's my result from 60 seconds of work.
http://www.cavanaughclan.com/adam/junk/wheel.jpg
You also need to adjust the intercooler, it doesn't line up with the perspective of the car.