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Evaluating Tire Efficiency: EPA's Initiatives to Improve Fuel Economy and Reduce Emissions

The EPA, through its Office of Air Quality and Transportation, is assessing the impact of tire choices on fuel economy and greenhouse gas emissions. With personal vehicles accounting for significant oil consumption and carbon emissions, the EPA aims to establish a tire ranking system based on their rolling resistance. This program intends to inform the public about the fuel efficiency benefits of different tires, ultimately leading to cost savings and reduced environmental impact. For more information, contact Lois Platte at the EPA.

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Evaluating Tire Efficiency: EPA's Initiatives to Improve Fuel Economy and Reduce Emissions

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  1. EPA Activities - Tires Lois Platte September 19, 2002

  2. What Part of EPA Interested in Tires? • Office of Air Quality and Transportation Advanced Technology Division Climate Change Technology Team • We evaluate and promote advanced technologies and fuels that reduce greenhouse gases and fuel consumption

  3. Fuel Economy Matters • Fuel economy is the usual metric for vehicles that we use to relate to greenhouse gases • Personal vehicles account for about 40% of U.S. oil consumption and about 20% of carbon emissions

  4. Measurable Benefits • A 1% improvement in personal vehicle fuel economy saves approximately 1.3 billion gallons of gasoline in one year . . . • Public saves $2 billion in fuel costs . . . • Trade deficit reduced $0.7B . . . • CO2 reduced by 14 MMT

  5. EPA Exploring Voluntary Program • Goal: Define a way to measure and communicate to the public the fuel efficiency benefits associated with different tire choices • Wanted to develop a tire ranking system based on test results (measurable and verifiable by EPA) provided by tire manufacturers • Envision providing information on an EPA website or maybe using an Energy Star - like label

  6. Current EPA Websites • EPA 5 star rating for emissions and fuel economy by car http://www.epa.gov/autoemissions • Fuel economy and greenhouse gases http://www.fueleconomy.gov

  7. Rolling Resistance Test Procedure • SAE tests provide standardized procedures for comparing the rolling resistance of tires • Are the these procedures reflective of consumer driving conditions? • EPA is exploring the questions • Rolling resistance ranking different with transient test? • Rolling resistance ranking different when test started with cold tires?

  8. Rolling Resistance vs Fuel Economy • EPA is performing track coast down tests on various tires on the same vehicle • Provides road load characteristics for the specific vehicle and tire for lab fuel economy testing • EPA expects to perform both rolling resistance and fuel economy testing on these tires

  9. Contact Information • Lois Platte • 734 - 214 - 4306 • platte.lois@epa.gov

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