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The age old tire pressure question
(lemmy.world)
2001 Infiniti QX4
Placard on car says 26 psi cold
Tires say 32-49
Rear tire is set to 27 cold
Does this look under-inflated? What’s the lowest I should go?
Even if you have a different size than is OE. You only disregard the psi, that is based on gross vehicle weight, if you know what you are doing.
It doesn't matter if you have 265/70r16 and go to a 275/50r20, you still use the same pressure because your car still has the same GVWR.