You can legally rip your own Wii disc into an ISO file using a homebrewed Wii or a compatible USB disc drive. Then, that personal backup can be played in Dolphin emulator. Sharing or downloading that ISO from the internet remains illegal.
An ISO file is a complete digital copy of the game disc used for emulation or playing on modified hardware. File Size & Format : A standard Wii ISO is typically , though data-scrubbed versions or alternate formats like may be smaller. Legal Recommendation sonic riders zero gravity wii iso download