average mpg with large tires - Ford Powerstroke Diesel Forum

 
LinkBack Thread Tools Display Modes
post #1 of 8 Old 10-31-2007, 06:22 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Oct 2007
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
average mpg with large tires

Hey I am a new member and I am just looking for some imformation about mpg. I have a 01 f250 7.3 I currently have 35/12.5 tires and i average between 13 mpg. Is this the normal average for larger tires and is there I could do to get better mpg rather then buying smaller tires? Thanks
powerhook5 is offline  
post #2 of 8 Old 10-31-2007, 06:42 AM
Compression Ignition Addict
 
460+'s Avatar
 
Join Date: Oct 2007
Location: Liberty,In
Posts: 767
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
It just depends on what gear ratio you have chances are you have 3.55 or 3.73 so you will loose a few mpg.

99 F350 4x4 dually
7.3 w/K&N af
4" exh into 6" Aussies stacks
4"lift &35" tires
CC mod HP crossover line
Beans stage II 120hp injectors
D66 turbo
ITP regulated return
reburn on TS= 25,high idle,60,100,120,140hp
updated ecm (2000 model)
Dyno#'s 360hp and 965 ft lbs trq
460+ is offline  
post #3 of 8 Old 10-31-2007, 07:06 AM
Compression Ignition Addict
 
slammedSI's Avatar
 
Join Date: Aug 2006
Location: Vernon, Texas
Posts: 3,333
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Send a message via AIM to slammedSI Send a message via MSN to slammedSI Send a message via Yahoo to slammedSI
Im not to sure on the 7.3 side of things. But I have 315-70-17's and went from 18-20 on the highway to 16.22, just did the math too. so yeah i would say thats about right. Im really thinking about going back to the 265. maybe 285.

-Bobby Crews- AKA Dr. Cookie Cutter!

2012 Ford F150 Ecoboost
-STOCK-

Quote:
Originally Posted by Dirk View Post
A 7.3 with an edge should never get into a race. Unless it's with a kid on a bicycle.. and the bike has a flat.
slammedSI is offline  
post #4 of 8 Old 10-31-2007, 07:11 AM
Conservative and Proud


 
Banshee34's Avatar
 
Join Date: Nov 2005
Location: Oregon
Posts: 14,491
Thanks: 0
Thanked 3 Times in 3 Posts
Mentioned: 0 Post(s)
Quoted: 7 Post(s)
Feedback Score: 0 reviews
On a side note.....

2001 F350, Lariat SC LB 4X4 PSD
Quadzilla Commander
Zoodad with Stealth Screen


National Hot Rod Diesel Association

The Org. Staff reserves the right to move, modify, delete or merge posts at our discretion and without explanation.



Banshee34 is offline  
post #5 of 8 Old 10-31-2007, 07:11 AM
Compression Ignition Addict
 
Raul@Stealth Automotive's Avatar
 
Join Date: Oct 2006
Location: Ventura County, CA
Posts: 20,359
Thanks: 23
Thanked 30 Times in 17 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 2 reviews
Send a message via AIM to Raul@Stealth Automotive
that sounds about right... but remember if you havnt re calibrated your speedo for the larger tires your MPG will be off... cause your traveling more miles than the speedo says.... im getting around 14MPG with my 37's with stock gears... when i was stock mode i was getting 16-17MPG
Raul@Stealth Automotive is offline  
post #6 of 8 Old 10-31-2007, 07:31 AM
Powerstroke.org Fanatic
 
Join Date: Jun 2007
Location: Jensen Beach
Posts: 115
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
on the high way i'm getting around 17 mpg.
3.73 gears
had the speedo reset for the tires
runs about 2200 rpm @80
jhp7.3 is offline  
post #7 of 8 Old 10-31-2007, 07:35 AM Thread Starter
Powerstroke.org Rookie
 
Join Date: Oct 2007
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
i have factory gear in mine I bought the truck less then a year ago the guy just put these tires on and a 3 inch leveling kit. I put a afe intake on and a superchip and havent seen any differents at all really. I am looking for better mpg
powerhook5 is offline  
post #8 of 8 Old 10-31-2007, 09:08 PM
Compression Ignition Addict
 
sirnunya's Avatar
 
Join Date: Jan 2007
Location: Springfield, OR
Posts: 738
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
put an exhaust on if it does not already have it. 13 is probably mostly city driving right? with your set up i would assume 16 or more on straight highway runs. im lifted 10in, 38in tires, and 4.88 gears. getting 11-14mpg depending on how i drive....
sirnunya is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome