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P Metric Designation Tires - A Comparison to Today's Alpha Designation Tires
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English
Abstract
A new passenger tire designation system was originated by the International Standards Organization (ISO) and has been approved by the U.S. Tire and Rim Association, Incorporated (T&RA) and the National Highway Traffic Safety Administration (NHTSA). This paper explains this P metric tire designation system and compares it in regard to load formula, endurance and wear performance, and dimensional tolerance criteria to the current T&RA alpha designation system in use on most U.S. passenger car tires.
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Authors
Topic
Citation
Lane, D., "P Metric Designation Tires - A Comparison to Today's Alpha Designation Tires," SAE Technical Paper 780170, 1978, https://doi.org/10.4271/780170.Also In
References
- “Engineering Design Information” The Tire and Rim Association, Inc. July 21 1977
- “1977 Year Book” The Tire and Rim Association, Inc.
- Andrus J. D. “Effects of Load and Inflation on the Endurance of a Belted Bias and Radial Ply Tire” Detroit SAE October 19 1976