PSA: Check the air pressure in your tires!

nolaegghead

We just recently got our first significant cold front.  So I checked the air in my truck tires and it was down 7 psi in 3 and 20 psi in one.

Almost without exception, if you have one tire with markedly lower air in it than the others, there's no "hmmm, wonder why..."... YOU HAVE A LEAK.  Always. Deal with it. That or someone is f-in' with you.

Also, one of the best tools I've ever purchased will help you.

THIS

Carry on and don't run flat.

PS:  adjust your tire pressure when your tires are cold and your vehicle is in the shade.

Kayak

I prefer this:

https://leeparksdesign.com/accurate-tire-gauge/

Plus it teaches you what the codes on tires mean!

hoosier_egger

I use this

Ozzie_Isaac

~1 psi per 10 degrees in temp.  (PV=nRT, if you must calculate it).

johnmitchell

I was told that if you put Nitrogen in your tires you won’t have that problem 

Ozzie_Isaac

When you have E rated tires and the dealer, in their wisdom airs them up to 75psi.  I run them at 25psi and told the dealer not to adjust them.

fishlessman

mine goes in for a leaky rear passenger this week. seems the lug nuts arent the same size socket size for some reason so looks like new lugs soon as well

Ozzie_Isaac

johnmitchell said:

I was told that if you put Nitrogen in your tires you won’t have that problem 

I use a mixture with ~80% nitrogen.

lousubcap

Shrinkage is shrinkage...

HogFather

Ozzie_Isaac said:

johnmitchell said:

I was told that if you put Nitrogen in your tires you won’t have that problem 

I use a mixture with ~80% nitrogen.

Hmm....How do you get the regular old air out of the tire once it's mounted and sealed on the bead? Do they evacuate the air out of the tire before filling with Nitrogen?

HogFather

nolaegghead said:

We just recently got our first significant cold front.  So I checked the air in my truck tires and it was down 7 psi in 3 and 20 psi in one.

Almost without exception, if you have one tire with markedly lower air in it than the others, there's no "hmmm, wonder why..."... YOU HAVE A LEAK.  Always. Deal with it. That or someone is f-in' with you.

Also, one of the best tools I've ever purchased will help you.

THIS

Carry on and don't run flat.

PS:  adjust your tire pressure when your tires are cold and your vehicle is in the shade.

That's for wussies. I use the kick test

hoosier_egger

lousubcap said:

Shrinkage is shrinkage...

My chainsaw can relate

Ozzie_Isaac

HogFather said:

Ozzie_Isaac said:

johnmitchell said:

I was told that if you put Nitrogen in your tires you won’t have that problem 

I use a mixture with ~80% nitrogen.

Hmm....How do you get the regular old air out of the tire once it's mounted and sealed on the bead? Do they evacuate the air out of the tire before filling with Nitrogen?

Turns out, the air in my region of the US has the same mixture I use in my tires, so no need to evacuate the air and replace it.

RRP

johnmitchell said:

I was told that if you put Nitrogen in your tires you won’t have that problem 

Well that's also want I was told at COSTCO when I had a new set of tires installed - 100% nitrogen they claim and I have yet to have any drop in pressure. Made a believer out of me!

nolaegghead

HogFather said:

nolaegghead said:

We just recently got our first significant cold front.  So I checked the air in my truck tires and it was down 7 psi in 3 and 20 psi in one.

Almost without exception, if you have one tire with markedly lower air in it than the others, there's no "hmmm, wonder why..."... YOU HAVE A LEAK.  Always. Deal with it. That or someone is f-in' with you.

Also, one of the best tools I've ever purchased will help you.

THIS

Carry on and don't run flat.

PS:  adjust your tire pressure when your tires are cold and your vehicle is in the shade.

That's for wussies. I use the kick test

The kick test is for when you buy a NEW car. (or used, I guess)

nolaegghead

RRP said:

johnmitchell said:

I was told that if you put Nitrogen in your tires you won’t have that problem 

Well that's also want I was told at COSTCO when I had a new set of tires installed - 100% nitrogen they claim and I have yet to have any drop in pressure. Made a believer out of me!

Dry nitrogen vs wet air.  What happens when water gets hot? 

JohnInCarolina

Ozzie_Isaac said:

~1 psi per 10 degrees in temp.  (PV=nRT, if you must calculate it).

Yeah but how big are the molecules?  

nolaegghead

JohnInCarolina said:

Ozzie_Isaac said:

~1 psi per 10 degrees in temp.  (PV=nRT, if you must calculate it).

Yeah but how big are the molecules?  

I get a whiff of what you're joking about here, but molecule size actually breaks PV=nRT at extremely high pressures.  Nothing you'd see in a tire, but maybe inside a RWNJ brain.

Ozzie_Isaac

JohnInCarolina said:

Ozzie_Isaac said:

~1 psi per 10 degrees in temp.  (PV=nRT, if you must calculate it).

Yeah but how big are the molecules?  

Average mole is 4"-11" long.  Eastern and Oregon being on the larger side.

poster

johnmitchell said:

I was told that if you put Nitrogen in your tires you won’t have that problem 

Its popular up here in the north and it does help with our wild temp swings, but not worth the hassle. Aviation tires use it too as they are exposed to some big temperature differences as well. I am battling a leaky aluminum rim right now. Nitrogen is supposed to help with that too as the molecule is bigger, but I just keep adding a few pounds of air once a week. Once a second starts to leak i will have them dismounted and sealed up again. Its the same problem every year. The salt and/or calcium on our roads is a never ending battle. TPMS is a great feature

nolaegghead

For anyone interested in Nitrogen vs Air, this pretty much sums it up (and you will be surprised).

http://www.pedrosgarage.com/Site_5/Nitrogen_or_Air.html

johnnyp

Next time I see any of you fellas, I’ll fill your tires with 78% nitrogen for half the price of the tire shops. 

Legume

I went full nitrogen for the cool green valve stem caps.

fishlessman

i have an air dryer on my air line.  betting my mechanic has a box of used green caps for the taking

SGH

nolaegghead said:
What happens when water gets hot?  

Well duh...... It burns you 

Botch

Ozzie_Isaac said:

JohnInCarolina said:
Yeah but how big are the molecules?  

Average mole is 4"-11" long.  Eastern and Oregon being on the larger side.

My mole is 9", it won't get thru a mask.
 


Twue Stowey:  In Dayton OH I actually auditioned with a band called The Trouser Mice.  

frazzdaddy

RRP said:

johnmitchell said:

I was told that if you put Nitrogen in your tires you won’t have that problem 

Well that's also want I was told at COSTCO when I had a new set of tires installed - 100% nitrogen they claim and I have yet to have any drop in pressure. Made a believer out of me!

Snake oil buddy

nolaegghead

@Botch stop trying to turn Scottie on, man, he's already out of control...

Cornholio

I don’t go for the nitrogen upsell but sometimes they just fill them up and give me the green caps anyways. I swap them out after so I don’t look like I got swindled. 

I definitely knew something was wrong the other day when my wife’s Benz showed 10psi lower in the rear right tire. Always a relief when it’s in the middle of the tread and can be plugged. 

Ozzie_Isaac

nolaegghead said:

For anyone interested in Nitrogen vs Air, this pretty much sums it up (and you will be surprised).

http://www.pedrosgarage.com/Site_5/Nitrogen_or_Air.html

But what if I want the false sense of security?

nolaegghead

Ozzie_Isaac said:

nolaegghead said:

For anyone interested in Nitrogen vs Air, this pretty much sums it up (and you will be surprised).

http://www.pedrosgarage.com/Site_5/Nitrogen_or_Air.html

But what if I want the false sense of security?

write your security prayer on the back of a Benjamin and send it to me and I'll give it to my prayer warrior network and you will have 5 years of false security.

You better believe it.