Did you know that different types of tires can give you better fuel economy.
Back in the day of the bias ply tire your did not care about fuel efficiency as gas was rather cheap.
Radial tires came on the scene back in the early 70's and gave vehicles better handling. Radial tires also gave you better fuel economy due to a better design and less road resistance.
Of course now, unless you own a classic car that looks better with the original bias ply tire, most vehicles come with a set of radials. And they come in different shapes and sizes. From high profile to low profile. All season to winter tire. And each will affect your fuel economy.
Tires that have the least rolling resistance also get the best mileage. Independent non-profit organization GreenSeal.org rates tires according to it's fuel friendlyness. They performed indendent testing of multiple tires on rolling resistance using a dynamometer. These tires also have better treadwear, which means they last longer. This efficiency does come at a cost: braking distance is longer.
So what tires do I recommend? I would leave that up to you to check out consumer reports
or the Automobile Protection Agency of Canada.