How can I fix the default orientation of a model? I downloaded a 3d motorbike from unity asset store. But its facing forward along -x-axis. All the parts are separate as children of a main object. I would like to fix it so that its facing along z-axis by default.  How can this be achieved in blender?
I'm assuming you are importing a .fbx file but even if you are not these setting are available on some other format imports. Simply select the orientation before importing