Removing the front fender is an option if your state allows for it, but I also respect that you might want to keep a front fender on there (your call).
Where is the tire rubbing ? If it's rubbing on the stock fender mounting hardware, then I dunno......
But if it's rubbing on the curved portion of the fender itself, then you only need to elevate the fender, yes ? You could fab extension plates to elevate it. Take measurements to see how much extension you need to clear the tire/fender. Drill the holes for mounting the extensions into the stock fender mounting holes. Then drill holes in the upper part of the extensions to attach your stock fender mounting tabs to. This is where it might get dicey: If the mounting hardware for the now higher fender mounts clear the tire, you're good. If the mounting hardware now rubs the tire, then you want to use "tee nuts" on the inside of the fender mounts to regain clearance. Tee nuts are threaded on the inside and sit pretty flush to the surface that you're attaching to (please see pic in link. These are called "Propell nuts", which are a type of tee nut)
You'd mount your extensions to the stock fender mounting holes, then place your fender over the extensions and use the tee nuts on the inside, threading your upper mounting bolts thru from the outside and using Blue Loctite as an added insurance against the upper mounting hardware from vibrating loose........instead of ordering online, I'd go to a good hardware/fastener shop locally to make sure you can get the right size diameter and the bolts with the right thread-pitch to match. You also may or may not have to cut down the length of the propell nuts on the receiving end to insure a clean, snug fit when the fender is installed.
1/4-20 x 1/2 Propell Nut Plain | Fastenal