never ever ever use greased lightning or simple green!!!!!!!!!!!!
i have a stained swingarm from that shit, yea its safe for Al but its not safe for the clear coat.
throw that sheet in the trash and get some honda polish.
you should be able to have your wheel stripped and repainted or powder coated, then cleared.
from the looks of your rotor and hub seems to be real dirty, have you been riding in the sand again?