[aardvarcus]

My short list from dozens of tire experiences on cars and trucks has led me to the following priorities. First select your tire tead and type that fits your application, eg LRR Highway tires unless you have a need for something else. Then pick the best brand in that type. Then pick the most aerodynamic factory alloy wheel available. Then and only then select your tire size that fits those wheels going as tall is you can but as narrow as possible. From my experiences wider and taller does not help mpg but just taller does. If you are willing to fabricate custom wheel spats perhaps the width would not matter, but without going to those measures it certainly does.