I tried to bang out a rim(steel) on my Kodiak, and it wasn't pretty after I got done with it! I couldn't imagine what an aluminum rim would look like after good beating with a hammer. My suggestion would be, if it's not leaking air, just run with it the way it is. Or, you can pick rims up on Ebay rather inexpensive,when guys take them off for aftermarket rims. We all like to keep our rims looking great all the time,but when you ride,you are almost sure to get nicks,dings, and dents for its almost inevitable. Even my T-5's have battle scars and I guess it's just part of the game. Maybe someone on here has a secret for doing this type of repair without doing more damage, if so I wouldn't mind knowing myself. Good luck and welcome to the site.