Tire Pressure

[Beobachter]

Just upgraded 87 C4 from 16" to 17" with 275/45's. What tire pressure is best for these? I assume same as 88 with standard 17's
Thanks

 

[jwilliams]

I believe the spec for C4's with the 17's was 30 psi. That said depending on what tires you have and how you plan to use the car you may want to experiment a little.

Jay

 

[Moonunit 451]

My F1 D3's are like 55. What's the tire say?

 

[jwilliams]

My F1 D3's are like 55. What's the tire say?

A tire's listed pressure is simply a maximum pressure needed to support the maximum weight the tire is rated to. Your goodyear most likely has a max of 44 or 51 psi. But you do not need anywhere near that. The only time I could see going above 40 psi is if you were autocrossing or doing a HPDE. This is done to help stiffen the tire when pushed to its limit (and beyond) at these types of events. Should you choose to run these pressures on the street your dentist and local tire shop will be glad to see you often. Dentist to replace fillings rattled loose from the firm ride. Tire shop for rapid tire wear in center section of tire.

 

[DavidH]

My corvette (96), says to have 30 psi for normal driving and 35 psi for high speed driving. Hope this helps.

 

[Tuna]

^
|
What he said applies to my 92 also.

 

[Topless]

I like a little stagger, so I run 2 psi less in the rear. (32 front/ 30 rear)
for auto cross, I run 40 in the front, 38 in the rear.

 

[Vettefan87]

35 psi all the way around in my vette...