Tire Air Pressure

[gthompson]

What is the best air pressure for a 289 Cobra with Goodyear Blue streak nylon tires?
And what do you think that the best air pressure would be for a 427 cobra with Goodyear Billboard tires?
Thank you for your help
George

[Silverback51]

For the BB's I ran 20 front and 18 rear.

[Bobcat]

If you`re anal , like me , check your hot pressure after a long drive and set your cold pressure according to what you want when the tires are at temperature .
For example , if I set my Avons at 26 psi cold , I get a 4.5 psi increase in the summer when they are warmed up .... which does change the handling . At track days , the increase can be up to 6 to 7 psi . I set my tires at the pressure I want ... when hot , and let the cold pressure fall where it wants , but use it as a base reference .
I set my tires at 22 psi cold and see about 25 to 26 psi hot , which is where the handling is what I want .

[gsharapa]

I run my Goodyear BBs at 24 front and 22 rear on the street. If I was going to Drag Race the car I'd drop the rears under 20 and raise the fronts to about 28. If I was going to road race it then I'd raise all 4 up to 28 to 30.