In case you want to use "Launch Control" with cars from the Blender "Transportation" pack:
https://blendermarket.com/products/transportationEverything looks fine in Blender but in Unreal right side of tires are invisible.On the left side everything is ok...
The developer wrote:To me this looks like a flipped normal inside Unreal.
When exporting the objects they will have their scale applied, which is no problem for most objects.
However, if an object has a negative scale it will have its normals flipped in the "applying scale process".
I have the Transportation add-on as well, so just checked this model and it does indeed seem like the right tires have negative scales.
So a way to get around this issue is to manually apply the scale on these "issue meshes" with "Ctrl+A -> Scale"
and then go into "edit mode" for the meshes, select all vertices with "A" and hit "Alt+n -> Flip" to flip the normals.
That worked for me... :satisfied:
Crassitudes (my "Alter Ego") on Youtube: 