Because WWE 2K15 does not exist on the Wii, there is no official ISO file or legitimate "Kickass" torrent link for it. Any files you find online labeled as "WWE 2K15 Wii ISO" are likely:
Delete any “WWE 2K15 Wii ISO” torrents you’ve started. Run a virus scan. Buy a used copy of WWE ’13 on eBay. Softmod your Wii using wii.guide. And enjoy the wrestling games that actually exist—not the ones you wish did.
If you find a torrent labeled “WWE 2K15 Wii ISO” on a modern Kickass clone, it is almost certainly one of three things:
The wrestling game community is incredibly dedicated. Modders often take the engine from or WWE '13 on the Wii and update the textures, music, and rosters to mimic the newer games. These are unofficial "hacks" rather than the actual WWE 2K15 game. Fake Files and Malware