41 PSI: High isn't it?

[Dayv]

As the volume of the inside of the tire decreases, the pressure necessarily needs to be higher to exert the requisite amount of force on the sidewalls to keep the tire inflated.

I'm reasonably sure my understanding is correct, although my high school chemistry may be a little rusty.

That's... not even chemistry!

 

[BoomBoy]

That's... not even chemistry!

I know, right? :lol:

 

[SwiftGTI]

touche :clap:

I don't mess around :laugh:

 

[Do Work Son]

I came to this stupid section looking for a video of a Golf R running 41psi on race gas and I get...math? What the fuck is wrong with you people?

Just for all the disappointed people (best I could do on short notice):

 

[Sherlock997]

We have quite the physicists in here.

That's... not even chemistry!

Although this is physics it is taught with chemistry for some reason, at least it was for me aswell.

 

[jackgti1]

PV=nRT

As volume decreases, pressure increases increase to maintain same rigidity.

classic pervnert. P1V1 = P2V2
.........................T1.......T2

dont forget that one either! hahahaah

 

[RacingManiac]

ditto....Ideal Gas Law is taught in chemistry first...its really more of a thermal/fluid thing though...

 

[myfastgti1]

The temperature of the air inside the tire will change, and along with that is density and pressure. This is a question you would see in fluid dynamics 2

 

[Dybz]

The temperature of the air inside the tire will change, and along with that is density and pressure. This is a question you would see in fluid dynamics 2

that's actually a pretty simple fluid dynamics question... hell, pretty sure we didn't even look at that in fluid mechanics because it was covered in thermodynamics 1.

 

[webcrawlr]

hot or cold?

Cold

 

[MetalBong]

Whoa, just came back to see this really lit up.

The biggest point that is easily overlooked here is construction of the tire, so many variables in construction methods that it's an apples to oranges argument trying to compare pressure needs from different size/brand/style tires.

 

[stuck24]

ok. um, thanks everyone.

 

[Huntoor]

PV=nRT

As volume decreases, pressure increases increase to maintain same rigidity.

haha ohh chemistry always works

VP/T as volume decreases pressure has to increase. and of course temperature effects them both! Heavier car with a lower volume of air will result in a need for more pressure! :attention_whore: lol

 

[jackgti1]

PV=nRT

As volume decreases, pressure increases increase to maintain same rigidity.

PERVNERT! Got me a B in chemistry

 

[schwabo]

I'm rocking 51 PSI in my 225/35/19's ...