I was wondering what the easiest way is to copy a car set up of let´s say a DTM21 BMW M6 to the same car but in another class e.g. GTR3 for the same track. As far as I can see, in game it is not possible to load them in game - is there a hack to doing it with the setup files?
I think it's not possible in this case because from a technical point of view the DTM 2021 cars are different from the GTR3 / ADAC GT Masters cars. They created separate DTM models because they needed to add the stickers with the driver name in the cockpit I think. When different classes use the same car model, you can see all the setups regardless of the class. I don't think you can edit the setup files somehow. You would probably need to make screenshots of your setups to recreate them in the other class.