To use a WBFS archive on the Wii, you'll need:
While WBFS is the de-facto standard for playing games on original hardware due to its high compatibility with USB loaders, it is not considered a true "preservation" format because it removes the original disc's update partitions and junk data. Essential Tools for Managing a WBFS Archive wii wbfs archive
is a proprietary filesystem developed by Wii homebrew coders. Unlike standard FAT32 or NTFS, WBFS was designed to strip away unnecessary overhead to store Wii ISO images efficiently. To use a WBFS archive on the Wii,