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Tire code
Automobile tires are described by an alphanumeric tire code (in American English and Canadian English) or tyre code (in British English, Australian English and others), which is generally molded into the sidewall of the tire. This code specifies the dimensions of the tire, and some of its key limitations, such as load-bearing ability, and maximum speed. Sometimes the inner sidewall contains information not included on the outer sidewall, and vice versa. The code has grown in complexity over the years, as is evident from the mix of S.I. and English units, and ad-hoc extensions to lettering and numbering schemes. New automotive tires frequently have ratings for traction, treadwear, and temperature resistance (collectively known as The Uniform Tire Quality Grade (UTQG) ratings). Most tires sizes are given using the ISO Metric sizing system. However, some pickup trucks and SUVs use the Light Truck Numeric or Light Truck High Flotation system. ==National technical standards regulations== The European Tyre and Rim Technical Organisation (ETRTO) and the Tire and Rim Association (TRA) are two organizations that influence national tire standards. The objective of the ETRTO include aligning national tire and rim standards in Europe.〔(About us ), European Tyre and Rim Technical Organisation. Retrieved 2010-01-05.〕 The Tire and Rim Association, formerly known as The Tire and Rim Association of America, Inc., is an American trade organization which standardizes technical standards.〔(Scope of the Association and Some of its History ), The Tire and Rim Association. Retrieved 2010-01-04.〕 In the United States, the Office of Vehicle Safety Compliance, a component of the Department of Transportation, is one of the agencies tasked to enforce the Federal Motor Vehicle Safety Standard (FMVSS).〔(Laboratory Test Procedure for FMVSS 120 ), National Highway Traffic and Safety Administration, United States Department of Transportation, April 10, 2000. Retrieved 2010-01-05.〕 Canada has published tire regulations, such as the Motor Vehicle Tire Safety Regulations SOR 95-148.〔(Motor Vehicle Tire Safety Regulations SOR 95-148 ), Canadian Legal Information Institute. Retrieved 2010-01-05.〕
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