Consumer Reports did a recent study of fuel saving tires. They claim that some tires can save you up to $100 in fuel savings per year. Michelin and Goodyear make tires rated well.

Rolling resistance accounts for about 4 percent of a vehicleÆs fuel use in city driving and about 7 percent on the highway, according to the U.S. Department of Transportation. Replacing high-rolling resistance tires can result in as much as $100 in annual fuel savingsùand potentially hundreds of dollars over the life of the tire.

If you're only talking about the next two years it doesn't sound like the cost/savings makes any sense.

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