# Nitrogen filled tires question

**URL:** <https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077>\
**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:** 1\
**Showing post:** 8

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**Author:** ![Cavi\_Mike](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/cavi_mike/32/5217_2.png) [@Cavi\_Mike](https://forums.speedlife.net/u/Cavi_Mike)\
**Post date:** [July 24, 2008, 8:45am UTC](https://forums.speedlife.net/t/nitrogen-filled-tires-question/52077/8 "2008-07-24T08:45:50Z")

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I think you may be missing the point, rubber is porous and smaller atoms/molecules will breath out slowly and larger ones will not. Has nothing to do with a leak, just the rubber itself.

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