I seem to be a little stuck and was looking some good advice about the GT World Championship in the Professional Events. I have a AMG Mercedes CLK-GTR race car with 1083hp. I have plenty of power to take and hold first for a few laps, but then my tires go to crap. Does anyone know some good setting for the CLK-GTR or any Endurance races I could win a better car? Some of the Endurances races are against the same cars I can't win against, so have to leave those races alone.