BlueTurboFX4

45 lbs

BlueTurboFX4

Went from 275 70 18 terra grapplers to 275 65 18 duratracs on my '12 ecoboost and still have lost about 2 mpg.

DavidKR

47.

started out at 50, rode like a hay wagon. brought them down to like 40-41 and it felt terrible on the highway and was even louder.

plan now is to keep them around where I have them and get some sand bags for the back. I have nothing in the bed and my rear axle actually comes off the ground and moves around from some of the bumps right now.

H82LOSE

iTrader: (1)

Wasn't 275 65 18 what came factory on your truck? Mine has 275 65 18 Goodyear's. I would thing you woulda have picked up MPG going to a small tire unless your duratracs are a LT 10 ply tire.

DavidKR

I think he might have said that backwards lol

BlueTurboFX4

They sure are. So were the Terra's.

H82LOSE

iTrader: (1)

I guess I'm confused. Your truck had Nitto 275 70 18 10 ply and you went to a 275 65 18 10 ply duratrac and lost 2 MPG? I must be missing something.

I didn't realize you get get a 10 ply tire from the factory.

BlueTurboFX4

I lost two with the nitto and didn't change with small duratracs.

H82LOSE

iTrader: (1)

Over your stock P rated 275 65 18's Im with now.

BlueTurboFX4

Yep.