Third you open your database with the editor and you search for the line track_model, at the column num_laps, you change the number of laps so the 25% is good enough for you.
pargios help me out please.
i did that but dont work, still got 15 laps on first race.
already try to start a new career mode and nothing.
do i nedd to make a new game?
I'm still playing F1 2012. In case anyone is interested, I got it to play with 3 laps. You have to download EGO Database Editor http://petar.outer-heaven.net/downloads/
Then you as parginos said, open your database with the editor and you search for the line track_model, at the column num_laps, you change the number of laps to 12. When starting a carrer select 25% of the race and you'll get a 3 laps GP.