Had new tires put on my 09 SCrew 4x4. Replaced BFG All Terrain KO's with BFG Rugged Terrains. Kept the same tire size (275/70/18). On my drive home from the office I normally get about 15.5 mpg. Today on the way home with the new tires on I got 19.8 mpg. Traffic was about normal and I didn't drive any different than I normally do. I anticipated getting about 1 mpg better due to less rolling resistance and a lighter tire (~7 lbs per tire), but that can't possibly be right. Can it?

They look great on the truck. I will try to get a pic or two and post them.

 

Can't really judge it based on one day's drive.....