275/65/20 to 3512.520 Fuel Mileage difference?

08BIGRIG · Mar 25, 2013

Hay there guys I currently have 275/65/20 Bridgestone Dueler AT 2 Tires and I am looking at getting the Toyo Open Country AT II in a 35/12.5/20 and was wondering if I would see a good loss in fuel milage or not? I would love to have a little bit bigger tire, but just dont want to kill the mileage. Thanks guys.

Jerry

sootie · Mar 25, 2013

hardly noticeable jerry. i did it on my old 08 and lost max .2 mpg.

jus10keith · Mar 25, 2013

The 275s measure out to 34.07. So, like sootie said, the difference will be negligible.

08BIGRIG · Mar 25, 2013

The reason that I was wondering is that the stock size tires is 57lbs and the 35/12.5/20 is 79 lbs. Thats more rolling mass to start and keep rolling. I am just curious.

INFRNL · Mar 26, 2013

the 35's should only be approx. 10lbs more per depending on which ones you choose I guess.

JDub · Mar 26, 2013

Different truck different tires, but I went from a 285/65 nitto a/t to a 285/65 nitto trail grappler and lost almost 2mpg (1.8ish) on the freeway. Same size tire, just heavier and more aggressive tread. I didn't think it would matter much, but it sure has.

Sent from my XT907