If you dont make your own as some have but I sure dont have the skill too....
Diamond wheel in Milwaukee will make them in any size from 15 to 22.5 at least...been done...they know the M715.
Stockton wheel in California might...they make our bolt pattern as a Power Wagon Special...they know what the M715 is too...but I dont know if they do other than stock rim size.
Lord send your Holy Ghost into our hearts and make the desire of our hearts Your Will.
Pro-choice, that's a LIE, babies don't choose to die!!