Any website claiming to offer a "free download" of a native PC version is likely providing malicious software or deceptive content . How People Play Gran Turismo 5 on PC
Risks of downloading alleged "GT5 PC" files
Proper emulation requires the RPCS3 environment; a standalone "repack" often lacks the necessary configuration to run without crashing. Enhancing the Experience
Download the official PlayStation 3 system software from Sony’s website and install it via the emulator.