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I’ve stopped a half dozen people from doing something like this… Every single one of them was filling up to the maximum pressure listed on the sidewall.
The sidewall pressure is only the correct pressure at the maximum load on the tire. The maximum rated load on the tire is often nearly twice the vehicle’s maximum weight rating, so the sidewall pressure is never the correct pressure for your vehicle.
The correct pressure for each tire on your vehicle is listed on a tag on the driver’s door, or door frame.
Jup.
Cars actually come with manuals that explain this stuff.
Reading is a lost art.
Honestly Ive looked all over for my car manual but I cant find it anywhere on the internet. My car is a 1993 Honda Civic EK3 which I got second (more likely 5th or 10th) hand. The earliest model’s manual I can find online is the 1995 model. Do you know a good site that might have the owners manual for my model?
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100psi is 6894 hPa for the freedom challenged among us.
I find bar more intuitive even if it’s just hPa/1000
Nearly 7 bar is impressive for any tyres
Any car tire.
For road bicycles 7 bar is just “normal”, 8 and above isn’t unheard of.
A guy once asked if I was crazy when I was pressurizing my hybrid bike to 6 bar, and I just pointed to the sidewall where the rating said 4.5-6.5 bar. The range is wide because the pressure you should use varies depending on what you weigh, and how you want to balance rolling resistance vs comfort.
And even then the safety margin on bike tires is more than double the max rating, so it’s perfectly safe to go a full bar over if you want.
neither of those mean anything to me
100 psi
14400 lbf/ft^2 (pounds-force per square foot)
1600 ozf/in^2 (ounces-force per square inch)
689.475729 kPa (kilopascals)
689475.729 Pa (pascals)
6.80459639 atm (atmospheres) (unit officially deprecated)
6.89475729 bars
68.9475729 dbar (decibars)
6894.75729 mbar (millibars)
5171.49326 Torr (torr) (unit officially deprecated)
5171.49252 mmHg (millimeters of mercury)
203.602068 inHg (inches of mercury)
70.30696 m WC (meters of water column)
0.07030696 km WC (kilometers of water column)
230.6659 ft WC (feet of water column)I didn’t know Torr was deprecated… For some reason that was always the number for STP I could remember in physics.
5171.49252 mmHg (millimeters of mercury)
why didn’t you say that immediately??
Can you give me a reading in burgers needed to achieve that pressure in my heart?
There are two types of friends, this is the second type.
100 psi = 100 pirsent.
If the car doesn’t fly, whoever stands by one of those tires most certainly will
Fly straight to heaven
Once my roommate punctured one of my tires and I went to a gas station and filled it up. Must have been one of my first times doing it ever. As I got back on the highway my car finally showed the pressure, it read 73….
Don’t feel bad … I drove down the road once in my old truck and started feeling a terrible shaking … I drove for a while hoping it would go away but it got worse. I finally pulled over and had a look at front passenger side tire … a bulge was sticking out of it like a giant bruise and once the tire stopped moving, the bulge grew ten sizes and as soon as I realized what it was, I turned away and the thing exploded!
Always check your tires.
Holy crap!
I know this is obvious but it boggles my mind how each square inch of that tire has almost 100lbs of force pushing on it
Just realizing now why hydraulics are so strong, a 6 inch squared piston at 100 psi is 600 pounds of force
I work with industrial hydraulics, the forces involved in big gear are truly insane.
Working pressures is around 270bar…on ~1.4m^2 of cylinders. Millions of kg of force.
270bar pneumatics… Fuck that
Plot twist: That reading is in Bar
CHITTYCHITTYBANGBANG
Any car can be a flying car if you give it enough acceleration
Like driving on four basketballs
meanwhile I’m sketched out by the tires on my uncles old road bike that say max 90 psi wheras mine say like 20 or so.
narrow tires need more pressure to maintain the same outward force, because the area is smaller.
Pffft amateur… I can easily pump my car tires up to 100 Bar.
These stupid sensors don’t do anything useful, they’re just a needlessly excessive expense when they need to be replaced.
I ignore mine. thump thump thump
