I stumbled into some old receipts today—the ones that remind you how the right set of tires is all you really need to get good fuel economy...

 Back in the day, when all my ’97 F-350 had on it was a Superchip's programmer and (most importantly) a set of 265/75R16 Michelin LTX M/S all-seasons, achieving 18.5 to 20 mpg was a cinch. Keep in mind the truck is a 1-ton, four-wheel drive, crew cab with 4.10s and an E4OD automatic.

 It was a conscious decision to purchase mud terrains, which I knew would drop my mileage down (the truck gets 15 to 17 mpg currently), but I was after a more aggressive look at the time and was willing to sacrifice. I'm currently in the process of trying to wear down what could possibly be the toughest set of Firestone Destination M/Ts ever produced, but once I'm done with that I may look into outfitting the 16x7 factory Alcoas with Michelin rubber again.

**I say the Destinations are tough because I pay little attention to rotation, treat them like crap, and they still look like 95 percent of their tread life is left, all with 35,000 miles on them. I've had good luck with them to say the least.