Can you please explain where and how these files are generated by CM? This way we would not be depending on someone to create them for us every time we download a new mod...
In the same directory as this mod: camber-extravaganza\tyres_data\
But, as I said, CM will create a .json file with folder name instead car name.
For example: content/cars/XX/X_X.kn5.
CM will create a filed called XX.json but you have to rename it to X_X.json