You can fine tune the difficulty of the AI drivers in career mode by editing a file.
- Open
in a text editor.<path-to-game>\gamedata\frontend\Mods.ini
- In the
[Mods]
section, change the value of theCareerDiff
entry to an integer between 60 (easier) and 100 (harder), inclusive.- The default value is 0, which seems to make the AI harder than setting this to 100, based on tests of opponent lap times.
- To get started finding your preferred difficulty, 80 or 85 is a reasonable starting point for challenging but not impossible opponents.
- Save the file and restart the game.