Tire vs. Tyre
For the rubber covering around a vehicle wheel, Cambridge labels “tire” US and “tyre” UK; “tire” also has a separate verb meaning to become or make weary.
For a vehicle wheel, use “tire” in US English and “tyre” in UK English; the verb “tire” stays “tire.”
Key details
Choose the right form
| Meaning/context | Use | Decision |
|---|---|---|
| vehicle-wheel noun in US English | tire | Use the US spelling. |
| vehicle-wheel noun in UK English | tyre | Use the UK spelling. |
| verb meaning become or make weary | tire | Use “tire” in both regional systems for this verb. |
Quick tests
Noun-or-verb test
Do you mean the rubber covering around a vehicle wheel?
If yes: Choose “tire” for US style or “tyre” for UK style.
If no: If you mean become or make weary, use the verb “tire.”
Caveat: The regional spelling split applies to the vehicle-wheel noun, not to every occurrence of “tire.”
Examples
The front tire needs more air.
US English uses “tire” for the vehicle-wheel noun.
The rear tyre was replaced before the journey.
UK English uses “tyre” for the vehicle-wheel noun.
Long delays can tire even experienced travelers.
The verb remains “tire”; the regional noun spelling does not apply.
Further guidance
Core difference
Use “tire” in US English and “tyre” in UK English for the vehicle-wheel noun.
Fast Test
Match the form to the intended meaning, regional convention, or required house style, then keep that choice consistent.
Variant Boundary
Do not replace the verb “tire” with “tyre” in British English; the regional variant applies to the vehicle-wheel noun.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
- Tire — Cambridge Dictionary (opens in a new tab)Cambridge Dictionary · US tire noun for vehicle wheel covering plus separate verb senses
- Tyre — Cambridge Dictionary (opens in a new tab)Cambridge Dictionary · UK spelling of tire for the vehicle-wheel noun