Splitting parts

So, I have 4 wheels which I imported from blender which i can’t import seperately. I need to split each wheel into a diffrent mesh so I can tween the diffrently, how would I do that?

I don’t see why you can’t just import them separately in the first place? What’s preventing you from doing that?

They will always come in 2 wheels because I use mirrored thing

If you used the mirror modifier then just apply it and separate the geometry in edit mode.