I run the same tire on my Falcon and footbrake also. Air pressure is relative to your car ( its weight and how it's distributed front to back). I use the same tire on my 3100 lb. Falcon with a 15x8 wheel and 16 lbs of air is where it's happy. Took some testing to find the happy place. Last three passes on well used tires 1.424, 1.422, 1.420. Are you staging in the same place every time? Got to be real careful when staging to get in the lights the same place all the time. Great tire doesn't need much burnout. Clean them off and go. Should get 200 passes or more out of them.
Jeff