Terrain Collision with Unreal Vehicle

Hey,
I’m currently having a problem with the wheels in my vehicle slightly falling through the terrain.
The vehicle is set up to do wheelies by adding a torque to the back of the car, this works fine on a normal static mesh but when applied to a terrain the wheels fall slightly through the terrain.
I have also used a line trace to see the collision status and it seems to not be correctly colliding with the environment.

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