help me see the difference

Could just carefully Hand sand the rusted areas with 80 grit then 180 grit, then mask them off with masking tape and masking paper.

Then just repaint the affected areas.
Been there, done that. Masking 4 of these wheels with a roll of tape took far too much time and effort. That was back when I didn't have arthritis in my hands. Even worse today due to my weakness. I still can't hold the button on a spray bomb down for more than a minute. I can strike thee grille lighter now. Maybe you come and renew these wheels while I cook the burgers? LOL Seriously... I got a blaster gun for Christmas and I've already ordered the peel and stick masks. My junior will shoot them for me. I still question how abrasive a media I will need to get the appliance epoxy off that I shot them with before. Merry Christmas.