Depends where it is rubbing on the molded mud flap. If rubbing on the outside best bet is the delete kits as trimming there looks pretty bad. If it is rubbing the lower portion of the mud flap further inside the wheel arch you can do some pretty easy trimming there that is not as noticeable. They come off really easy and you can see what you have. They have a lot of void space inside and room to trim, bend the sheet metal, drill new holes for the screws whatever works. You must not be rubbing much if the other side is not rubbing at all.