Nitrogen Filled Tires

[Tcoat]

I fill mine with helium!
My car is .0000000000001 pounds lighter now!

[Whatabouteggs]

I use an approximately 78% concentration of nitrogen with 20% oxygen and some other proprietary compounds.

[Ultramaroon]

Originally Posted by Tcoat

I fill mine with helium!
My car is .0000000000001 pounds lighter now!

Beat me to it!

[Poodles]

The supposed other advantage is that the tires won't oxidize from the inside out... Dunno how much I believe of that, but if I was given the option to use nitrogen for free/cheap, I'd probably do it as a "why not?"


I'm sure we do dumber things to our cars that has no real function...

[tnle]

Waste of money for street driving and the track day regulars (imo), unless you're chasing ten tenths competitively.

Ran it once to trial out it's characteristics on track and wasn't blown away, finished the day and refilled tires with "regular" air... because its free...

[Kelbyat07]

I thought we get it for free.. well at least for me.

[Tcoat]

Originally Posted by Poodles

The supposed other advantage is that the tires won't oxidize from the inside out... Dunno how much I believe of that, but if I was given the option to use nitrogen for free/cheap, I'd probably do it as a "why not?"


I'm sure we do dumber things to our cars that has no real function...

As opposed to oxidizing from the outside?
Mitsu salesguy tried that line when I was looking at Evos. Said as soon as you put air under pressure the oxygen level sky rockets and destroys the tires from the inside. I laughed so much I almost puked right in the showroom.
The great part was when I asked if they would change the air in my Lancer GT tires to nitrogen (as a joke) he said they couldn't do it there as they didn't have a tank.

[BRZ21]

the only reason is to limit the fluctuation in pressures due to temperature changes.

that is the only reason. regular driving you probably wont notice any difference (except around this time of year as temps cool off)

on the track it is much more stable.

anyone that says it doesnt do anything is wrong.

[stugray]

Originally Posted by BRZ21

the only reason is to limit the fluctuation in pressures due to temperature changes.. that is the only reason

If you use DRY AIR, there is no difference.
AIR is 80% Nitrogen AND ~20% Oxygen.
Nitrogen & Oxygen are RIGHT NEXT TO EACH OTHER on the periodic table
Therefore a cylinder filled with 100% Nitrogen will experience EXACTLY the same change in pressure with temp as a cylinder filled with 80% nitrogen & 20% oxygen.

Originally Posted by BRZ21

. regular driving you probably wont notice any difference (except around this time of year as temps cool off)

on the track it is much more stable.

anyone that says it doesnt do anything is wrong.

I say it doesnt do anything and I say YOU are wrong.
SCIENCE Bitches!

[BRZ21]

Originally Posted by stugray

If you use DRY AIR, there is no difference.
AIR is 80% Nitrogen AND ~20% Oxygen.
Nitrogen & Oxygen are RIGHT NEXT TO EACH OTHER on the periodic table
Therefore a cylinder filled with 100% Nitrogen will experience EXACTLY the same change in pressure with temp as a cylinder filled with 80% nitrogen & 20% oxygen.



I say it doesnt do anything and I say YOU are wrong.
SCIENCE Bitches!

Dry air? Thats just as complicated to find...

You're right with your idea but in the real world "air" in your tires is whatever "air" your compressor pumps in... not dry.

I'm not wrong.

[Ultramaroon]

I fill my tires with used coolant so the pressure doesn't change at all.

[Tcoat]

Originally Posted by Ultramaroon

I fill my tires with used coolant so the pressure doesn't change at all.

I just change my air each season.
Just put my winter air in as the summer stuff just wasn't cutting it anymore!

[stugray]

Originally Posted by BRZ21

Dry air? Thats just as complicated to find...

You're right with your idea but in the real world "air" in your tires is whatever "air" your compressor pumps in... not dry.

I'm not wrong.

You must not work around auto paint much. They ALL have air dryers on the compressors.

I will rephrase:

"There is no difference between using dry air versus Nitrogen to fill your tires. Anyone who says otherwise is wrong"

Originally Posted by Ultramaroon

I fill my tires with used coolant so the pressure doesn't change at all.

Actually this discussion made me think about it a lot.

IF you could find a phase change liquid that evaporates right at the final target temp of the tires at race temps, then you could have MORE STABLE temps than anyone experiences right now.
The liquid would work as a tire balancer (like the little beads that some use) and would evaporate to keep the tire temps stable.

I have never heard of that before.

We use some interesting liquids at work as cooling fluid.
It evaporates at 70F and leaves NOTHING behind.
I used it in my ultrasonic cleaner to clean some carb parts.
It was cool - pour in fluid, turn on cleaner with heat.
Come back in 20 minutes and parts are clean, dry, and there is now dry-dirt at the bottom of the cleaner. It is similar to dry cleaning fluid.

[Ultramaroon]

Originally Posted by stugray

Actually this discussion made me think about it a lot.

IF you could find a phase change liquid that evaporates right at the final target temp of the tires at race temps, then you could have MORE STABLE temps than anyone experiences right now.
The liquid would work as a tire balancer (like the little beads that some use) and would evaporate to keep the tire temps stable.

I have never heard of that before.

We use some interesting liquids at work as cooling fluid.
It evaporates at 70F and leaves NOTHING behind.
I used it in my ultrasonic cleaner to clean some carb parts.
It was cool - pour in fluid, turn on cleaner with heat.
Come back in 20 minutes and parts are clean, dry, and there is now dry-dirt at the bottom of the cleaner. It is similar to dry cleaning fluid.

Awww, damn it, Stu. I was just d!cking around. Now I'm going to have to pull out my thermo text. I hear what you're saying but I feel like there's something being overlooked.