Modified RaceDriver.exe executable to run the game in 16:9 resolutions
How to install
Replace RaceDriver.exe in the installation folder with the included exe. You may want to make a backup of the original RaceDriver.exe just in case.
On the same location as RaceDriver.exe, the file "pchardwareconfig.ini" should exist. If it doesn't, run HardwareSetup.exe to generate the ini file automatically. Once the file is created, modify these lines to your needs. This is just an example for FullHD and display refresh rate of 60hz:
FullScreenRefresh=60
FullScreenHeight=1080
FullScreenWidth=1920
Remember: you must enter a valid 16:9 resolution. Other aspect ratios are not expected to work.
How to modify the exe file
If you want to create the widescreeh fix exe by yourself or need another aspect ratio, here are the instructions on how to modify RaceDriver.exe: Pcgamingwiki.com