back spacing question - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today

Thread Tools

Please support our sponsors and let them know you heard about them on
Old 03-25-2011, 07:11 PM   #1
vballspen's Avatar
Join Date: Dec 2009
Posts: 336
Send a message via Skype™ to vballspen
back spacing question

alright going with a rc 4 inch lift and 33's with 4.10s and super 30/35 and arbs.

What backspacing do I need to have to clear 33x12.5x15? on 15x8? is there a safe number where I know for sure it wont rub?

I'm going to drive it till the wheels fall off, put them back on, and keep going.
vballspen is offline   Quote Quick Reply
Old 03-26-2011, 07:56 AM   #2
Wheel2Work's Avatar
Join Date: Feb 2011
Location: Southern Oregon
Posts: 874
15 x 8 with -19mm offset will give you 3.75" of backspace... Thats the same amount as a 15 x 10 with a -44mm offset. I have been looking for the answer for a while, and stumbled on it on the Black Rock website

2000 4.0l Sport, Auto, some mods done - planning more
Wheel2Work is offline   Quote Quick Reply
Old 03-26-2011, 08:32 AM   #3

WF Supporting Member
jp2611's Avatar
Join Date: Aug 2010
Location: Fort Wayne IN
Posts: 6,791
Not to disagree-just not sure- but thought I had heard 3.5" bs was what was needed. Someone has said "Cragar Soft 8's" to be honest I don't know exactly what those are except wheels-wouldn't know them if I saw them, but think a lot of people on here run them 'cause they work with the 33's and rear shock mounts. Maybe one of the tire and wheel people will chime in.
jp2611 is offline   Quote Quick Reply
Old 03-26-2011, 10:01 AM   #4
Yipeee Kay Ayyy

WF Supporting Member
Wesboy's Avatar
Join Date: Feb 2010
Posts: 2,091
I've got 33" MTZ's on DC-2's with 3.65" backspacing and still need a single washer on each steering stop to stop slight rubbing on the (anti)sway bar.
BTW that's not a typo, DC-2's have 3.65" backspacing.

Heaps of room in the rear.
Wesboy is online now   Quote Quick Reply
Old 03-26-2011, 10:27 AM   #5
InfernoGirl's Avatar
Join Date: May 2009
Location: Newburgh IN
Posts: 11,419
Obviously it depends on the ACTUAL width of the tire... Many of us run soft 8's with 4" bs and 33x12.5's with no rubbing at all... But I suppose it is due to the mfg. differences in tire width.... The largest bs you can get away with to suit your application will be your best choice to reduce wear on the hubs and stuff. But anywhere between 4.5 and 3.75 should be your sweet spot....

Dirty Mudder column covers|

'01 Wrangler Sport, Sienna Pearl Mine
'07 Rubicon 2D, Flame Red His
'11 Wrangler Sport 4D, Black Ours...

Originally Posted by Kate View Post
Not every girl, is a Jeep girl. We're a special breed.
InfernoGirl is offline   Quote Quick Reply
Old 03-26-2011, 02:07 PM   #6
vballspen's Avatar
Join Date: Dec 2009
Posts: 336
Send a message via Skype™ to vballspen
Yea I have crager soft 8's and am going with bfg at.

Question #2 can i measure distance from front of rim back and find out my current bs. or do i need to pull the tire off to get a good measurement.

I'm going to drive it till the wheels fall off, put them back on, and keep going.
vballspen is offline   Quote Quick Reply

Quick Reply

Register Now

In order to be able to post messages on the Jeep Wrangler 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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:


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

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 Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Another Jeep top replacement question PTaylor TJ General Discussion Forum 4 01-31-2011 06:51 AM
hard top wiring question bandj524 YJ Tech Forum 0 01-24-2010 01:51 PM
modest upgrades and a turbo question? AKWrangler TJ Tech Forum 6 11-17-2009 12:30 AM
Trans Mount Question MOz TJ Tech Forum 8 06-10-2008 04:14 PM
stock back spacing???? 04blackunlimited TJ General Discussion Forum 4 07-23-2007 01:21 PM

Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 10:30 AM.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC. is not in any way associated with the Chrysler Motors LLC