Upon importing, you will notice that the vehicle has only one wheel. This is because the game instances (re-uses) wheel_lf for all other wheels.
Wheel meshes do not have vertex groups but are instead rigged by a Child Of Constraint (as explained in Drawables > Rigging).
Also, wheel meshes have the Is Wheel Mesh property ticked under Object Properties > Sollumz.
That's all that's needed for setting up wheel meshes!
In Sollumz Tools > Fragment > Create Fragment Objects is a tool called Generate Wheel Instances. This tool will create instances of the wheel, allowing you to better preview what it looks like in-game. This is useful when positioning the wheel bones.
