New wheel offset and bs help - Ford Powerstroke Diesel Forum
6.0L Exterior Discussion Body and Accessories Talk

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 03-18-2013, 10:13 PM
Compression Ignition Addict
 
Join Date: Oct 2006
Location: Humboldt, California
Posts: 2,143
Thanks: 111
Thanked 9 Times in 8 Posts
Feedback Score: 1 reviews
New wheel offset and bs help

So im looking at new wheels, Im going to go with 18x9s. I plan to run either a 325x60 or 35x12.5. The two sizes are -12offset with 4.5 in bs or +1offset with 5in bs. What would be better? the -12 will stick out further right?
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 03-19-2013, 04:04 AM
Compression Ignition Addict

 

Join Date: Dec 2010
Location: IOWA
Posts: 389
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Yea negative offset puts it further out. In most cases 325/60s equal out to be a little bigger than 35s and a little wider than 12.5s. Depends on the stance your going for.
Reply With Quote Quick reply to this message
  #3  
Old 03-19-2013, 02:03 PM
Compression Ignition Addict
 
Join Date: Oct 2006
Location: Humboldt, California
Posts: 2,143
Thanks: 111
Thanked 9 Times in 8 Posts
Feedback Score: 1 reviews
Re: New wheel offset and bs help

Quote:
Originally Posted by the06wildebeast View Post
Yea negative offset puts it further out. In most cases 325/60s equal out to be a little bigger than 35s and a little wider than 12.5s. Depends on the stance your going for.
thanks, sounds good. Ya looking at toyo a/t the 325 is 13 wide and like 33.4 tall and the 35 is 12.5 wide and 34.6 tall they recommend a narrower wheel for the wider tire which seems odd.

Sent from AutoGuide.com App
Reply With Quote Quick reply to this message
  #4  
Old 07-08-2013, 05:16 PM
Serving Our Country!
 

Join Date: Apr 2012
Location: Irvine, California
Posts: 498
Thanks: 3
Thanked 8 Times in 8 Posts
Feedback Score: 2 reviews
Sorry to dig up an old thread (search function) but I'm going through the same dilemma! You wouldn't be happening to be looking at method wheels would you? I want an 18x9 wheel on 35-12.5-18 and was wondering how far they would stick out. I understand the whole +/- offset thing but the backspace change threw me off going from 5 to 4.5, would this suck the wheel in or push it out?? Thanks for reading my rambling
Reply With Quote Quick reply to this message
  #5  
Old 07-10-2013, 03:48 PM
Serving Our Country!
 

Join Date: Apr 2012
Location: Irvine, California
Posts: 498
Thanks: 3
Thanked 8 Times in 8 Posts
Feedback Score: 2 reviews
Bump for back spacing answer
Reply With Quote Quick reply to this message
  #6  
Old 07-10-2013, 06:20 PM
Premium Member
 

Join Date: Jan 2012
Location: Fallon, Nv
Posts: 2,402
Thanks: 52
Thanked 9 Times in 8 Posts
Feedback Score: 0 reviews
Back space is exactly that, the distance from the inside of the wheel to the mounting surface. Lay a loose wheel on the concrete and drop a tape measure through the center, the distance from the concrete to the mounting face is the backspace. Backspace is more consistent than offset, a 4.5" backspace will be the same whether it's an 8 inch wheel or a 15 inch wheel. However, a -25 offset on a 10 inch will have a different fitment than a -25 on a 12 inch wheel.

Personally, I wouldn't run a 12.50 tire on anything less than a 10 inch wheel.
Attached Thumbnails
New wheel offset and bs help-offset-backspace-chart.jpg  
Reply With Quote Quick reply to this message
  #7  
Old 07-10-2013, 10:04 PM
Serving Our Country!
 

Join Date: Apr 2012
Location: Irvine, California
Posts: 498
Thanks: 3
Thanked 8 Times in 8 Posts
Feedback Score: 2 reviews
So according to that chart, if I'm reading it correctly, is saying that it will have -12 offset over stock also accounting for the change in backspacing? Or is it -12 then plus whatever comes with the .5 less backspacing? I think I get it but I'm puttin way too much thought into this so I keep confusing myself haha. I wouldn't mind -12 but that's really all I would want to go.
Reply With Quote Quick reply to this message
  #8  
Old 07-11-2013, 04:57 AM
Premium Member
 

Join Date: Jan 2012
Location: Fallon, Nv
Posts: 2,402
Thanks: 52
Thanked 9 Times in 8 Posts
Feedback Score: 0 reviews
You are reading WAY too much into this. Find your width on the left vertical, go to the right until you find your off set, then go up to find your backspace. '05 and up used about 6 inches of backspace from the factory, 99-04 used about 4.5 inches. On that chart, 6 inches of backspace can be anywhere from 70mm to -51mm of off set depending on wheel width.
Reply With Quote Quick reply to this message
  #9  
Old 07-11-2013, 05:15 AM
Serving Our Country!
 

Join Date: Apr 2012
Location: Irvine, California
Posts: 498
Thanks: 3
Thanked 8 Times in 8 Posts
Feedback Score: 2 reviews
Haha gotcha, I figured I was getting too far into it. Thanks man, makes sense now
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
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:

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
Display Modes

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



All times are GMT -8. The time now is 12:51 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors