Rubicon tire pressure for my Sport

1quick1

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I swapped on some Rubicon wheels/tires on my Sport so I obviously can't look at the sticker in the door.

Is it 37psi the recommended cold pressure on these? I would imagine they would warm up to over 40 then.
 

JL_MX

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You might need to do the chalk test to find the correct pressure.
 

BillyHW

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Find the load your stock tires will bear on their load tables at the door jam pressure on your Sport. Then reverse find the lowest pressure necessary to bear an equal or greater load on the Rubicon tire's load tables. (They may be different load tables if the Rubicons are LT tires and the Sport's are not.) This will be your "new door sticker" pressure.

Everything needs to be a cold pressure.

FYI, I did this calculation once on some winter tires for my sedan that were a slightly different size from my stocks and the change only went from 32 PSI down to 31 PSI. So there might not be much of a change at all.
 

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