Formula One Championship Edition (2006) was never officially released for the PC; it was a PlayStation 3 exclusive
The 2006 season featured grooved tires (a regulatory nightmare). The PC game models the "cliff" fall-off. On the console, tires degrade linearly. On PC, you push for 15 laps on the soft compound, feel the grip plateau, and then suddenly—you are a passenger. This unpredictability forces you to manage pace like a real driver.
The physical DVD release (EU/AU only) is rare. Your best bet is sites – the game is no longer sold digitally. Be careful to scan for malware. The disc version is v1.0; the “Director’s Cut” patch (v1.2) is essential.
Since there is no native PC port, the best way to play is through the RPCS3 Emulator . This allows you to play the original PS3 version with enhanced resolution and performance that far exceeds the original console hardware.