So I'm Working on this SUV that is kind of pimped out for and end of the world scenario but im having the hardest time texturing it(always has been a weak point). I want to find a tutorial or an example of how to paint the texture and create the spec for a car that would go into an engine, not a tutorial on how to make a crazy max shader that will not work in real time. Any links or suggestions are always welcome... thanks.

Replies
Starting with an AO pass is always a good point. MAybe you could take a look at the next-gen texturing training. Helped me a lot with texturing.
For metal stuff in realtime a light cubemap would be a good solution too. depends on the engine you use.