Physics, Car, Collision Causes Unnatural "Spazzing"??

Hi there,
I am creating a simple car game.

The car using physics, including the orthodox 4 wheel colliders etc works fine. The car’s rigidbody has constraints on the position of x, the rotation of y and z, as such the car moves only along z, up and down.

My issue is this, when the car hits an obstacle, head on, it flips about, spazzes out and generally looks very unnatural.

Any ideas of what is causing this?

try how max your car’s velocity can go at a time

Ok, I think i figured it out.

The car’s body and wheel dimensions, allow for the wheels to be in contact with the ground even if it is flipped up or down 90 degrees. This must be allowing contact between the wheel and ground, driving the car to flip about.

Thanks, I will play with it.