Does anyone know what my psi in my tires should be to get the best launch?

 

Its not going to be the same for everybody. But, as a starting point, try 20 psi and do a good burnout. If that doesn't work, drop another 2 psi and run it again. Most people have success in the 15-20 pse range. I had Nitto dr's last season and mine seemed to hook best around 18 psi.