Re: 2010 Tire Recommendations
From experience, Michelin's provide the longest mileage and best reliability. We have had two sets of HydroEdges on our 2002 Prius and would be on our third set, however they quit making them in our 14-inch size. Please note that this tire does NOT perform well in snow or ice, and is designed for wet or dry roads. They performed well in Arizona and the desert southwest.
Check for mileage ratings. The HydroEdges are rated at 90,000 miles; and several other Michelins are rated at 80,000 miles, including the Michelin X radial sold through Costco (which we recently purchased). The two sets of HydroEdges we had were replaced at approximately 65,000 miles due to age, and their tread was not completely worn off.
Make sure any tires you buy are rated for 44 PSI max, and keep them pumped up to 44/42 or 42/40 so they will wear evenly. This is very important if you plan to keep them for the 80,000 miles for which they are rated. This also reduces rolling resistance.
Also, tires rated for low rolling resistance may provide better fuel economy; although, we have had good luck with all Michelin tires, especially the HydroEdges.