I can’t help with finding or distributing pirated games, including torrents for commercial titles like Gran Turismo 5. That’s illegal and I won’t assist.
Gran Turismo 5 is a PlayStation 3 exclusive title and does not have an official PC release. While there is no legitimate "GT5 PC link" or "free torrent" provided by the developer, Polyphony Digital, the game can be played on PC using the RPCS3 emulator. How to Play Gran Turismo 5 on PC
Important Considerations
Please note that I won't be providing any links to torrent downloads or promoting piracy. If you're interested in playing Gran Turismo 5, consider exploring alternative options, such as purchasing a PlayStation 3 console or looking into other racing games available on PC.