35/35

It really depends on what tires you have on your Nissan 370Z. I run 34 psi. all around.

I have PSS.. can/should these be run at higher psi?

This thread is two years old...

Hot pressure should be around 37-39 psi. 33-36 is about optimal cold temp (lower if hotter ambient temps)

If you're not reaching 37psi hot, you should raise the cold pressure until you can. 42psi hot is about the highest you should go in the rear. With the G we have a bit more weight so it can handle up to 46psi before things start to get squirrelly. From experience i wouldn't recommend that 😁. I dont know if the Z would handle that well since it has about 200ibs less weight. Larger tires could handle it, i wouldn't try it with 245's.

Cold temperature is room temperature to freezing. Good luck driving summer tires in freezing conditions :ugh2:

Thanks Mays. Reason I asked was because these PSS are softwalled... I read elsewhere that these can be run at higher psi in order to stiffen them up a bit but I don't know how they will behave in the Z.

In either case soft or stiff. The target is heat management. The PSS is not vastly different than any other tire in its category, it still has to meet the requirements of its load index.

If the heat build up is too fast and too high, then you're most likely sliding the tires, a more rigid tire structure due to increased pressure will allow this as you know. For normal daily driving where you aren't stressing the tire, then its usually safer to run towards the hotter temps. You'll have faster, more direct steering and bump control will be quicker. The only caveat being more rebound force, which will make things a bit harsher and a little sketchy.

If you bought an xl rated tire, then most likely the sidewall stiffness is not softer than average. The pss comes in both xl and normal ratings. :tiphat: