Overlapping UVs?

Hey guys,
currently I am working on my first asset for UE4.

My Problem is:
I am building a trashbin with four wheels that will be all textured the same way. Would you suggest to layer the UVs of the wheels upon each other for saving texture size or would you put them all seperatley on the UV layout?
I know, that overlapping UVs will cause trouble with light maps in UE4.

I think this is pretty basic stuff and there should be a way how a situation like that is handled properlyand professional.
Does anyone know the best way to solve this?

Cheers and thanks,

You can use two sets of UVs. One for the textures and another for your lightmaps. That way you can have better resolution on your main textures and then also have a UV set for your lightmap that does not have any overlaps and has appropriate padding.