• @_thebrain_
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    298 hours ago

    Not in a car… But 10 or 12 ply truck/tractor/trailer tires can run around 90 psi

    • Mr. Semi
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      53 hours ago

      100 psi is standard on semi truck tires.

      Steer tires specifically are sometimes 110 or even 120.

      • @_thebrain_
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        23 hours ago

        In not really talking about possible, I am more talking real world running pressure.

        I’m sure you can air up a car tire but at 90 psi it would be so rock hard that travel on it would be extremely uncomfortable. Also you would risk blowing it out whenever you went over a big enough bump. The tire volume inside would deform and cause a massive pressure spike.

        Tractor trailer tires are made with more layers of rubber and steel belting so they can safely handle higher pressures.

      • @[email protected]
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        -37 hours ago

        Yeah you can definitely do it with car tires for a short time at least, that’s how you check for leaks (overpressure to like 80 psi and put it in a tub of water, look for the bubbles)

        • Rhaedas
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          275 hours ago

          You do not need to overpressurize to find leaks. This is dangerous advice, as a tire blowing at even lower pressures can kill you. And there won’t be any warning before it does.

          • @[email protected]
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            140 minutes ago

            Sorry buddy but you’re full of shit, this is standard practice at tire shops. The reason you overpressure is that a tire at rest may not lose air noticeably, you overpressure to mimic driving down the highway when the tire is bulging out more due to centrifugal forces.

            80 psi for a few minutes is not really that dangerous, the tires blow up at 120+ psi.

          • @ayyy
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            103 hours ago

            Do NOT do this!