You can get mini lite alloys that fit micra's, a definite answer is the Mazda mx5.
It doesn't technically come with mini lites, Mazdas version have 7 spokes as opposed to 8 and they will definitely fit micras.
the pcd on them is 4x4" (which is mini pcd) which is near bang on. But with the nuts off you can see the studs sit to 1 side of the hole (ill get a pic tomorrow), but I just did the nuts up really tight and its all fine. I dont know if this will work on alloys but they do on steels.