TireRack Puts Eco-Friendly Tires To The Test

Do "eco-friendly" tires really live up to their name? According to the independent tire retail giant TireRack, it depends on the tire.

Most "green" tires claim to increase fuel mileage, helping to decrease a consumer's carbon footprint. TireRack decided to see if the eco-rubber really helps improve a car's fuel economy. In a new test, TireRack fitted a 2009 Toyota Prius with six different types of tires, and put each type through a 550-mile drive, which consisted of highway, city, and rural road surfaces.

A baseline test - using run-of-the-mill Goodyear Assurance tires - returned an average fuel economy figure of 51.4 mpg. All but two tires - the Michelin HydrogEdge with Green X and the Goodyear Assurance ComforTread - improved upon that baseline figure. By far, the most efficient tire was Michelin's Energy Saver A/S, which helped boost fuel economy to 53.8 mpg -- a 4.74 percent improvement. TireRack estimates that, if driven 15,000 miles a year, these tires could help save $52.50 in annual fuel costs, and reduce CO2 emissions by nearly 420 lbs.

Of course, eco-friendly tires often incur extra cost, but the second-place tire, Bridgestone's Ecopia EP100, is only $1 extra per tire than the Prius' OEM rubber.

For all the details of TireRack's surprisingly comprehensive experiment, visit their report here.

Source: TireRack

My old 2000 Jetta TDI got 56.2mpg from the Twin Cities to Grand Marais, MN (near the Canadian border) with *** tires and 7 gallons of 92 octane with the rest topped off with Diesel (oops...). Priuses are for yuppies who have no automotive sense and so much money they don't know what to do with it and want to fit in with Al Gore's pothead 100mph Prius driving son.Anyone with any common sense would buy a TDI over one of these wuss pieces of crap.Synergy Drive; What a joke.Hey Toyota, why don't you start offering Diesels in the US to compete with the TDI? We're waiting...

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