OK guys its Mustang day at Sacramento raceway, what is needed for me to run on the track...safety, psi on tire......(Nito 555 worn down), shift points, laucnhing RPM......any good tips would help..??

why do street tires require full psi for maximum traction?

They don't from what I understand.
Higher pressure=less rolling resistance but easier to easier
Lower Pressure=more rolling resistance but harder to spin