Some chassis like higher tire pressures and some low
Some Top Karts handle real well in the corners, and some hop like there is no tomorrow
Honestly you really wanna find the best air pressure that works for you, for your weight, for your kart and your set up, and ultimately for your driving style.
Do you run front and rear torsion bars?
How wide are the front and rear tracks?
What kind of axle do you run?
I’ve seen people running as high as 19 psi, and they glide trough the corners like magic.