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?
this post was submitted on 18 Jul 2024
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The placard on the driver's door frame is what you use.
The tire itself has no relevant information for a driver, only for an installer at a shop mounting the tire.
*as long as the tire is the same size as suggested by the manufacture
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.