# Federal Motor Vehicle Safety Standards; New Pneumatic and Certain Specialty Tires
> **National Highway Traffic Safety Administration** · Final rule. · Published 2013-01-17 · Effective 2013-07-16 · 78 FR 3843
## Document
- **Document number:** 2013-00938
- **Category:** fmvss
- **Sub-agency:** National Highway Traffic Safety Administration
- **Federal Register citation:** 78 FR 3843
- **CFR reference:** 49 CFR 571
- **Publication date:** 2013-01-17
- **Effective date:** 2013-07-16
- **DOT docket:** Docket No. NHTSA 2013-0003
## Abstract

This final rule amends Federal Motor Vehicle Safety Standard (FMVSS) No. 109, New pneumatic and certain specialty tires, to change the test pressure for the physical dimensions test for T-type tires (temporary use spare tires) from 52 pounds per square inch (psi) to 60 psi. This increase in test pressure for the physical dimensions test will marginally increase the stringency of the test and will align FMVSS No. 109 with international and voluntary consensus standards.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2013/01/17/2013-00938/federal-motor-vehicle-safety-standards-new-pneumatic-and-certain-specialty-tires)
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