I started a championship with the dtm 2013 cars and the ruleset. The Strange thing is that every driver retired from the race. Can anyone help me?
How did they retire? Did they simply drive into the pits and stop the car there? I guess, you could try to use the custom ruleset as a workaround since the DTM 2013 rules weren't really special in any way.
It's probably a problem with the DTM 2013 ruleset then, maybe they're being disqualified for not taking their mandatory pit stop or something else.
That could actually be the case, maybe the AI can't do their mandatory pit stop when this rule set is being used. The DTM 2014 rule set should support mandatory pit stops.