Operations

NHTSA Announces Tire Safety Ratings

Posted on September 21, 2005 by LCT Staff - Also by this author - About the author

WASHINGTON, D.C. – Passenger vehicle tire quality has improved since last year, according to ratings released by the National Highway Traffic Safety Administration (NHTSA). NHTSA’s 2005 ratings cover more than 2,400 lines of the most popular passenger vehicle tires sold in the U.S. The agency rates tires based on traction, treadwear and their ability to resist heat.

This year, nearly 90 tire lines received the highest possible rating for traction. Also, five tire brands (Big-O, Goodyear, Michelin, Bridgestone and Cordovan) produce tire lines that received exceptional ratings for tread durability. This year, nearly 700 tire lines were given the highest grade ("A") for heat resistance.

"Higher-quality tires, along with good maintenance, provide consumers a greater margin of safety,” said NHTSA Administrator Jeffrey W. Runge, M.D. “The tire-grading system is a big help in the often-confusing process of selecting tires."

Because heat can increase the risk of blowout, temperature ratings are important. Tires with the highest heat resistance are graded "A" followed by "B," or "C" (lowest). A "C" grade represents the minimum performance required in a high-speed test set by federal regulation.

For some consumers, stopping distances on a wet road can be important. Traction ratings are expressed in letter grades from "AA" (the highest) to "C" (the lowest). Tires with a higher grade allow a vehicle to stop in a shorter distance on a wet road.

Tire ratings can be found on NHTSA's Web site at http://www.safercar.gov/tires/pages/tireratings.cfm. Consumers can view ratings for tires used on passenger cars, minivans, SUVs and light pickup trucks. Under federal regulation, ratings also must be molded into the outer sidewall of all passenger tires.

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