this post was submitted on 20 Sep 2024
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Not in a car... But 10 or 12 ply truck/tractor/trailer tires can run around 90 psi
I just looked it up. It seems that normal car tires will explode at 115 - 145 psi.
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.
Right, you would likely pop a tire on your friendly neighborhood pothole. Even if you were lucky and avoided all of that, the tires will bulge in the center, drastically reducing the contact patch with the ground and you'd have probably 15-35% traction compared to proper inflation.
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)
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.
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.
I won't be as rude, but you are the one making a claim that exceeds both common sense and the warning on a typical car tire sidewall. A leak from a puncture area, bad bead seal, or tire failure point will show at normal inflation pressures with a water/soap test, as anyone in their backyard can attest to. You don't need to simulate flexing and stress for this, in fact pushing the tire to its limits with high pressure will absolutely find a failure of the tire structure very quickly, which was the point of my warning. Maybe you've never seen or heard a tire explode. It doesn't pop like a balloon.
I would question any shop doing this procedure from a manufacturer's recommendations and from OSHA standards.
Your tire shop is the kind that would inflate a split rim tractor tire without a tire cage.
It's [email protected] life - let him waste it how he wants! /s
Don’t slash ‘em
Unless you want to end up in a watchpeopledie sub