# Why haven't flat-proof tires been invented?

**URL:** <https://boards.straightdope.com/t/why-havent-flat-proof-tires-been-invented/604961>\
**Category:** Factual Questions\
**Created:** [December 3, 2011, 5:48pm UTC](https://boards.straightdope.com/t/why-havent-flat-proof-tires-been-invented/604961 "2011-12-03T17:48:53Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![mac\_bolan00](https://avatars.discourse-cdn.com/v4/letter/m/b3f665/32.png) [@mac\_bolan00](https://boards.straightdope.com/u/mac_bolan00)\
**Post date:** [December 6, 2011, 5:42am UTC](https://boards.straightdope.com/t/why-havent-flat-proof-tires-been-invented/604961/21 "2011-12-06T05:42:18Z")

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foam-filled tires for mining have been around (bridgestone.) the ford lincoln presidential car in the 70s had a steel protrusion inside on the wheel that will keep an air-filled tire round even with a puncture and still go 50mph. but that’s really in the event of a pucnture.

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**Author:** ![Spoke](https://avatars.discourse-cdn.com/v4/letter/s/a88e57/32.png) [@Spoke](https://boards.straightdope.com/u/Spoke)\
**Post date:** [December 6, 2011, 6:24am UTC](https://boards.straightdope.com/t/why-havent-flat-proof-tires-been-invented/604961/22 "2011-12-06T06:24:54Z")

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> [@Sarabellum1976](#):
>
> This thread has become rather flat and tiresome.

Way to take the air out of the conversation, **Sarabellum**.

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