www.responsiblepurchasing.org responsible purchasing guide for light-duty tires and wheel weights...
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www.ResponsiblePurchasing.org
Responsible Purchasing Guide for Light-Duty Tires and Wheel Weights
Light-Duty Tire and Wheel Weight WebcastMarch 18, 2008
Matt KittellProgram Manager
Responsible Purchasing Network
www.ResponsiblePurchasing.org
Overview
Best practices Low rolling resistance tiresRetread tiresLead-free wheel weights
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Best Practices
Proper tire inflation
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1 psi drop in tire air pressure = 1-2% rolling resistance increase
No excess load
Less weight = lower rolling resistance
End-of-Life
Scrap markets, not landfills!!!
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Tire Energy Use
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1/3 lost due to rolling resistance
Inflation and LRR tires reduce rolling resistance
10% less rolling resistance = 1-2% better fuel economy
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Low Rolling Resistance (LRR) Tires
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New cars sold with LRR tires
LRR replacement tires difficult to find
Rolling Resistance Coefficient (RRC) Specify SAE J1269, <0.01
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Retreads
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Retread tires save five gallons of oil per tire
Millions of gallons could be saved annually if light-duty vehicles used more retreads
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Retread Tires
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Bad tread does not mean bad casing
Retread method similar to new tire manufacturing
Ensure quality (e.g., federal spec ZZ-T-441H)
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Wheel Weights
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Each tire has wheel weight (Pb)
4.5 oz per vehicle
2,000 tons of lead wheel weights fall off tires each year
Abrade into particles polluting water and air
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Wheel Weights
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By 2009, most new vehicles will have steel or zinc weights
Specify for steel weights in replacement market
Visit www.LeadFreeWheels.org
Lead weights – BADZinc weights – GoodSteel weights - BEST
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Responsible Purchasing Guide for Light-Duty Tires and Wheel Weights
www.ResponsiblePurchasing.org/Purchasing_Guides/Tires/
Matt KittellProgram Manager
Responsible Purchasing [email protected]
301-891-1004