# tire pressure: does this exist?

**URL:** https://forums.speedlife.net/t/tire-pressure-does-this-exist/37259
**Category:** NYSpeed Automotive
**Created:** [October 19, 2007, 11:20am UTC](https://forums.speedlife.net/t/tire-pressure-does-this-exist/37259 "2007-10-19T11:20:00Z")
**Posts on this page:** 1
**Showing post:** 38

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### Author: ![speedracer329](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/speedracer329/32/5058_2.png) [@speedracer329](https://forums.speedlife.net/u/speedracer329)
#### Post date: [October 23, 2007, 10:35am UTC](https://forums.speedlife.net/t/tire-pressure-does-this-exist/37259/38 "2007-10-23T10:35:50Z")

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[quote=“theblue,post:37,topic:37259"”]

the coefficient of nitrogen is only .2 better at best (since you’re probably not getting a pure fill) so it’s not really worth it unless almost free. equate that to an expansion of maybe 3-4psi at at track day instead of 4-6psi (my experience with street tires).

just not worth it.

I pretty much expected the result of this thread would be that it wasn’t worth it, but it’s a good topic, idea to talk about.

[/quote]

well said, i forgot who it was a few months ago but they were talking about filling their tires up with helium… i lol’d

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