I decided to make a Jeep-like vehicle. I call it the Expiditioner. View it in 3d here: http://p3d.in/FyFmq
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On a second thought, the wheelbase seems to be fine. But I'd like to call your attention to something more serious:
It seems to me you made this car by sticking together a bunch of primitives (cubes, cylinders, etc). While it may look good at the first glance, the main drawback of making a vehicle like that is the amount of unseen faces. You really need to tidy up the mesh by removing the unseen faces.
While having around 3k tris is no big deal, you should make a habit of keeping your mesh clean. It will not only optimise the performance, but also makes working with the model much easier.