Ragtopjohnny : Learn the rules of topology. Then you can model anything with ease.

These are the rules of good Topology.
For all the High End App's.
Follow them you will succeed.Ignore them you will fail.

1. The mesh has to be 100% quads.
   model a low polycount mesh mostly quads and a few Tri's.
   Subdivide once makes it 100% quads.
   It's how V4,V5 was modeled 100% quads.

2. The mesh Topology has to have good flow.
   for example take a cube sub divide 3 times ,good topology flow.

Then the mesh will subdivides well.

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Ragtopjohnny : Your a beginner trying to make a expert level realistic car.

I would suggest letting the realistic BMW M1 car go for now and just make a
something like a car that subdivides well for practice.

You can browse TurboSquid cars some have wireframes.
ya can see how they done there topology.
Just google TurboSquid. wireframes alt to be solid not see threw.

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If you go on a Max forums.where you alt to be.
Don't be personal or opinionated or argumentative.ya get thrown off real fast.
Be very professional. don't take offense to RTFM .just let it go.
Don't ask easy questions that's in the manual.

Not everyone makes it.You half to fight for this.

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The Artist that will fight for decades to conquer their media.
Even if you never know their name ,your know their Art.
Dark Sphere Mage Vengeance