# Nitrogen filled tires question **URL:** \ **Category:** NYSpeed Automotive\ **Created:** [July 24, 2008, 8:07am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077 "2008-07-24T08:07:28Z")\ **Posts on this page:** 20\ **Page:** 2
**Author:** ![theblue](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/theblue/32/5074_2.png) [@theblue](https://forums.speedlife.net/u/theblue)\ **Post date:** [July 24, 2008, 12:29pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/21 "2008-07-24T12:29:44Z")
well yes and no… it’s nice for track cars because the pressure stays a lot more consistent. but for 99% of people it’s a scam. ---
**Author:** ![fairgentleman\_Z](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fairgentleman_z/32/7263_2.png) [@fairgentleman\_Z](https://forums.speedlife.net/u/fairgentleman_Z)\ **Post date:** [July 24, 2008, 2:47pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/22 "2008-07-24T14:47:17Z")
I’ve crewed for a guy using nitrogen filled tires. Pressures rose just like normal air. Probably just mounted and filled. One method I have seen is mount, then collapse tire with ratchet strap to purge then fill with nitrogen. Anyways, my question is what is the advantage of nitrogen vs. air with a really good (say refrigerant + desiccant + I should have paid more attention during that SMC seminar) dryer system? ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [July 24, 2008, 2:49pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/23 "2008-07-24T14:49:53Z")
The only advantages I can think of for dry nitrogen vs dry air is the bigger molecules :cjerk: and marketability. ---
**Author:** ![mechanicalmadness](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mechanicalmadness/32/5022_2.png) [@mechanicalmadness](https://forums.speedlife.net/u/mechanicalmadness)\ **Post date:** [July 31, 2008, 6:44pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/24 "2008-07-31T18:44:29Z")
> [@ILCisDEAD](#): > > We use nitrogen in the struts, and tires at the AFB. as for reasoning of why, i’m not entirely sure. AWD Drifter was right. Nitrogen charged shocks rarely foam up due to heavy abuse. As far as the tires I heard somewhere that nitrogen is less likely to expand at altitude. However the 2 grams of common sense i have left tend to steer me clear of that theory. ---
**Author:** ![mechanicalmadness](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mechanicalmadness/32/5022_2.png) [@mechanicalmadness](https://forums.speedlife.net/u/mechanicalmadness)\ **Post date:** [July 31, 2008, 6:47pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/25 "2008-07-31T18:47:27Z")
Hey Fry btw, what kind of media do you guys use in the absorption towers? Im just curious because that machine looks somewhat like what we build at my work. Just bigger and a little more complex looking ---
**Author:** ![Jam](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jam/32/7235_2.png) [@Jam](https://forums.speedlife.net/u/Jam)\ **Post date:** [July 31, 2008, 7:48pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/26 "2008-07-31T19:48:37Z")
i once told toner he neede dot change the air in his tires, “get that winter air out of there dude, shit is bad for it. drain it, and fill it back up with summer air” he actually believed me ---
**Author:** ![cky89](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cky89/32/4945_2.png) [@cky89](https://forums.speedlife.net/u/cky89)\ **Post date:** [July 31, 2008, 7:55pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/27 "2008-07-31T19:55:42Z")
lol Jam you have special friends. ---
**Author:** ![AShort](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/ashort/32/4947_2.png) [@AShort](https://forums.speedlife.net/u/AShort)\ **Post date:** [July 31, 2008, 7:57pm UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/28 "2008-07-31T19:57:48Z")
> [@Jam](#): > > i once told toner he neede dot change the air in his tires, “get that winter air out of there dude, shit is bad for it. drain it, and fill it back up with summer air” > > he actually believed me LOL ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [August 4, 2008, 9:40am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/29 "2008-08-04T09:40:30Z")
> [@mechanicalmadness](#): > > Hey Fry btw, what kind of media do you guys use in the absorption towers? Im just curious because that machine looks somewhat like what we build at my work. Just bigger and a little more complex looking Synthetic Zeolite ---
**Author:** ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)\ **Post date:** [August 4, 2008, 9:51am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/30 "2008-08-04T09:51:53Z")
umm… how did no one mention that measly old atmospheric “air” is 78% comprised of nitrogen? ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [August 4, 2008, 9:53am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/31 "2008-08-04T09:53:07Z")
> [@Fry](#): > > IIRC an oxygen molecule is 3 angstroms “square” whereas a nitrogen molecule is 4.3 angstroms by 3 angstroms, hence it’s not supposed to permeate through the rubber as fast as oxygen. In theory. > > For a street car, filling the tires with nitrogen at a tire shop is horse shit IMHO. **You’re starting with 78% nitrogen. Going up higher via grease monkey tire shop technique isn’t going to net you much of an increase.** > > HOWEVER > > Any nitrogen production technique I know of will dry the living hell out of it (well south of -50\*F dewpoints), which is good because a lot of the expansion from heating a tire is caused by the water vapor in the air in your tire. > > All that being said, you will never see me pay to put nitrogen in my tires. > > Although I am tempted to slap together a PSA nitrogen generator and offer nitrogen filling services at tracks days and autocrosses, where it actually could make a difference. Hmm… > [@Nikuk](#): > > umm… how did no one mention that measly old atmospheric “air” is 78% comprised of nitrogen? It’s OK. It was buried in the first response. :zong: ---
**Author:** ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)\ **Post date:** [August 4, 2008, 9:53am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/32 "2008-08-04T09:53:30Z")
dude, I don’t read YOUR posts. :roll: ---
**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\ **Post date:** [August 4, 2008, 9:54am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/33 "2008-08-04T09:54:39Z")
Can’t say that I blame you. :shrug: ---
**Author:** ![MPD47](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/mpd47/32/7383_2.png) [@MPD47](https://forums.speedlife.net/u/MPD47)\ **Post date:** [August 4, 2008, 9:55am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/34 "2008-08-04T09:55:49Z")
> [@Cavi Mike](#): > > If it’s good enough for the GTR, it’s good enough for me. :lol: The GTR tires may be aired up with nitrogen but they only have 1 valve stem, they do not purge them of the contaminated air before putting the nitrogen in (the correct way). So as with most things GTR related, it’s just marketing for idiots. ---
**Author:** ![Nikuk](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/nikuk/32/7254_2.png) [@Nikuk](https://forums.speedlife.net/u/Nikuk)\ **Post date:** [August 4, 2008, 10:05am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/35 "2008-08-04T10:05:46Z")
> [@MPD47](#): > > :lol: > The GTR tires may be aired up with nitrogen but they only have 1 valve stem, they do not purge them of the contaminated air before putting the nitrogen in (the correct way). So as with most things GTR related, it’s just marketing for idiots. :lol: :tup: > [@Fry](#): > > Can’t say that I blame you. \<3 Beer tonight. Light duty though… ---
**Author:** ![Geehee](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/geehee/32/7238_2.png) [@Geehee](https://forums.speedlife.net/u/Geehee)\ **Post date:** [August 4, 2008, 10:11am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/36 "2008-08-04T10:11:38Z")
> [@Fry](#): > > Oh, I forgot. You’re a manager. Here you go: > > Nitrogens are bigger than oxygens. Oxygens can squeeze through teeny tiny holes that nitrogens can’t fit through. > > :tinfoilhat: \<–Just for good measure. :tup: 😛 LOLOLOLOLOLOLOLOLOL ---
**Author:** ![L8APEX1](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/l8apex1/32/7276_2.png) [@L8APEX1](https://forums.speedlife.net/u/L8APEX1)\ **Post date:** [February 2, 2009, 8:13am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/37 "2009-02-02T08:13:29Z")
i realize that i am super late to this party but this is exactlywhy r-134a leaks out of retrofitted r-12 systems ---
**Author:** ![Joe](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/joe/32/7219_2.png) [@Joe](https://forums.speedlife.net/u/Joe)\ **Post date:** [February 2, 2009, 8:32am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/38 "2009-02-02T08:32:12Z")
that’s nice. ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex034/uploads/speedlife/original/2X/b/b7170c8eddc0b95ece6b88172b2f416a08489a45.png) [@system](https://forums.speedlife.net/u/system)\ **Post date:** [February 2, 2009, 8:33am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/39 "2009-02-02T08:33:56Z")
lollll watttt? ---
**Author:** ![justa4door](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/justa4door/32/7259_2.png) [@justa4door](https://forums.speedlife.net/u/justa4door)\ **Post date:** [February 2, 2009, 8:40am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/40 "2009-02-02T08:40:10Z")
ohhhhh I dont see it was that like a tree humper comment [Previous page](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077.md?page=1)