this post was submitted on 18 Jul 2024
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Mechanic Advice

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The age old tire pressure question (lemmy.world)
submitted 4 months ago* (last edited 4 months ago) by venusaur@lemmy.world to c/mechanicadvice@lemmy.world
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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?

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[–] venusaur@lemmy.world 1 points 4 months ago (1 children)

Thanks. What does the installer use the info for?

[–] Death_Equity@lemmy.world 2 points 4 months ago (1 children)

Practically, nothing. The pressure on the sidewalk is what the manufacturer says will seat the tire on rim, but reality dictates you add pressure until the tire pops into place. That may be 40psi, but I have had to use over 100psi to get a tire to pop in place if that is what it needed and the tire lube wasn't enough and you correct to manufacturers' spec once the beat seats.

[–] venusaur@lemmy.world 1 points 4 months ago

Interesting. Thanks!