I am unsure which/what is causing it.
The collision mesh is a slightly-modified Jeep collision mesh (slightly smaller in x-axis), and non-modified Jeep script(s).
Whenever you hit this vehicle with a hammer, or ram into each other with said vehicle, it bounces far to much/high/far.
You can keep it in the air (from hammering it) for a couple seconds easily.
I figured it had something to do with spring.cs, or the engine-codeblock of the server.cs.
I have tried many changes, and have had no success.
These are single taps each photo:


