iRacing Setup Guide
IRacing needs to be set to windowed and borderless mode. This configuration will appear identical to fullscreen mode.
- Open the Options menu.
- Navigate to the Display tab.
- Make sure the
Full Screenoption is off. - Make sure the
Borderoption is off - Set
Max Carsto 63 under Other Cars Detail. - Restart iRacing to apply the changes and remove any borders.

warning
Ensure to restart IRacing after changing these settings. Otherwise you'll still see a border.