I took the vehicle from the example project that comes with unreal engine. Migrated the whole actor and all its dependencies. The vehicle worked, but as soon I applied my own model to it, the wheels stopped working.
Ming you, my car mesh has the exact same bone structure as the original mesh. I exported it from Unreal and imported it to Blender so that I can have sure I can re-use the same setup.
Despite that, the wheels on my model just fall trough the floor. Changing the model back to the SKM_SportsCar fixes the issue.
Additionally, pushing the player character up to the front wheels will result in this error message.
The physics are enabled on the whole car mesh, as they are by default. This error isn’t present when the actor uses SKM_SportsCar.
EDIT: I found this tutorial which uses this plugin and with the both of these I managed to fix my issue. Still no clue what was wrong previously, but it does work now!