Create animation BP > VehicleAnimInstance (select car skeleton too).
Import fbx of car mesh. (Check Skeleton mesh)
Open physics asset, select * and in body creation change vertex painting to "single convex Hull" and press Re-generate Bodies then simulate.
Create two BP classes: VehicleWheel, one for "front wheel" other for "back wheel".
Open "front wheel class", in Class Defaults > Wheel enter exact Shape Radius and Shape Whidth
Do the same for "back wheel class" + set wheels setup > steer angle to 0.
Create BP of class: wheeled vehicle.
Open it and set the mesh.
Add Component in mesh -> "Spring Arm" -> "Camera" and position it.
In "Event Graph":
set Details > Animation > Anim Class
In Details > Vehicle Setup > Wheel Setup, open all wheels and enter corresponding name and classname of each wheel.
