I am thinking of running a street class for labor day weekend and have to switch my tires to mickey thompson drag radials. I have never ran drag radials so I have no idea where to even start with the air pressure. I am running alot smaller tire so I might have some hooking issues anyways. I am going from hoosier QTP 28x14.50x15 to a mickey drag radial 275-60-15. The car hooks really good with the QTP's at 13.5 to 14 psi.