# Comparative Inflated Pressures

**URL:** <https://www.trainerroad.com/forum/t/comparative-inflated-pressures/29165>\
**Category:** Equipment\
**Tags:** tires\
**Created:** [February 3, 2020, 10:10am UTC](https://www.trainerroad.com/forum/t/comparative-inflated-pressures/29165 "2020-02-03T10:10:59Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![cartsman](https://sea2.discourse-cdn.com/trainerroad/forum/user_avatar/www.trainerroad.com/cartsman/32/18565_2.png) [@cartsman](https://www.trainerroad.com/forum/u/cartsman)\
**Post date:** [February 3, 2020, 10:32am UTC](https://www.trainerroad.com/forum/t/comparative-inflated-pressures/29165/2 "2020-02-03T10:32:03Z")

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I would guess it’s more to do with tire thickness and flexibility than the volume of air. A MTB tire is quite a bit thicker than a road tire, a car tire is a helluva lot thicker than a MTB tire. Volume of air would only be significant if when you push on the tire you are significantly decreasing the volume (and therefore increasing pressure). Even with a 23C tire the volume reduction from you pushing it in a few mm in one spot is going to be negligible.

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