MPG
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Joined: May 2011
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MPG
My First post!
i was wondering does tire size make much of a difference on gas mileage?
i have an 05 6.0 that i just got about a month ago and i was expecting to get better gas mileage than i do.
im getting about 12mpg but i do have 35" tires
any feed back would be great.
i was wondering does tire size make much of a difference on gas mileage?
i have an 05 6.0 that i just got about a month ago and i was expecting to get better gas mileage than i do.
im getting about 12mpg but i do have 35" tires
any feed back would be great.
Hotshot
Joined: Aug 2006
Posts: 17,398
Likes: 317
From: Whittier, CA
My 6L gets excellent gas mileage around town, and on the highway it doesn't use any gas at all!
But seriously, you didn't give much info. You get 12MPG diesel mileage doing what? Town, highway, combined?
I barely get 10mpg with 100% city driving. I usually get at least 16mpg on the interstate, depending on my right foot.
Bigger tires definitely burn fuel. Especially when they get up around 35".
But seriously, you didn't give much info. You get 12MPG diesel mileage doing what? Town, highway, combined?
I barely get 10mpg with 100% city driving. I usually get at least 16mpg on the interstate, depending on my right foot.
Bigger tires definitely burn fuel. Especially when they get up around 35".
Postmaster
Joined: Jun 2008
Posts: 2,564
Likes: 11
From: Wayyy NoCal, USA
Yes, absolutely. In 4 different ways.
1) If the speedometer/odometer were not re-calibrated for the larger tires, the odometer will show less miles than actually traveled.
2) Larger tires weigh more (sometimes a lot more if an M/T or other burly tire). It takes more energy to accelerate a heavy tire. Impacts city (start/stop) mpg more than highway.
3) Larger tires present more windage and aerodynamic drag. Impacts higway more than city.
4) Many larger tires are of a softer carcass design, which results in greater rolling resistance.
In my experience, the typical 35x12.5 will cost you about 2-4 mpg compared to stock sizes.
1) If the speedometer/odometer were not re-calibrated for the larger tires, the odometer will show less miles than actually traveled.
2) Larger tires weigh more (sometimes a lot more if an M/T or other burly tire). It takes more energy to accelerate a heavy tire. Impacts city (start/stop) mpg more than highway.
3) Larger tires present more windage and aerodynamic drag. Impacts higway more than city.
4) Many larger tires are of a softer carcass design, which results in greater rolling resistance.
In my experience, the typical 35x12.5 will cost you about 2-4 mpg compared to stock sizes.
