Never go by the tire itself. Always go what the vehicle tire placard says.It is best to read on the tire to see what the manufacturer recommends.
Bias ply on my car is at 26 psi. I run radials at 32. An addition of 6 psi as per industry standards.
Car calls for 24? Do 30 with radials.
Its that simple.
Lost of posts making a mountain out of a molehill.
Our cars are pushing 50 plus years old and many in different stages of condition and/or wear.
Set the pressures to whatever you want that makes you feel comfortable and safe to drive.
Been in the biz since early 90's and been around C bodies all my life.