Vehicle Tyre Collision Issues

Hello everyone,

Me and an ‘associate’ are working together to start the beginnings of a vehicle game. However we are running into a few issues with the modeling side, and more specifically the collisions for the vehicle.

At the moment our main issue is the fact that the vehicle never moves. Either the tires are slightly off the ground, or colliding through the floor about halfway, no matter how I set the collisions in PhAT. The animation for the wheels rolling works correctly, as well as the steering.

Our main sources of reference have been:

Vehicle Art: https://docs.unrealengine.com/latest/INT/Engine/Physics/Vehicles/VehcileContentCreation/
Vehicle User Guide: https://docs.unrealengine.com/latest/INT/Engine/Physics/Vehicles/VehicleUserGuide/

We have followed the contents very strictly so are unsure why we are still having issues. Looked around on the forums too but all the solutions we have tried have been to no avail.

I have attached a screenshot of our model and the PhAT setup. The PhAT setup is the thing that I am most unsure of, so is perhaps where the issue is lying.

Thank you for reading and hope someone can give some feedback.