Wheel question for new lift - Ford Powerstroke Diesel Forum
Suspension & Steering Discuss OEM & aftermarket suspension, lifts, air ride suspension, shocks, steering components, etc.

User Tag List

LinkBack Thread Tools Display Modes
post #1 of 3 Old 02-11-2010, 04:07 PM Thread Starter
Emergency Services

TxFireman1972's Avatar
Join Date: Mar 2008
Location: Beaumont Texas
Posts: 4,112
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 2 Times in 2 Posts
Feedback Score: 6 reviews
Wheel question for new lift

I got all my stuff in to bump up to 7" of lift on my truck. I'm selling my current wheels and tires and buying 37x13.50x20 Kumho KL71's and 20x10 Black KMC Monsters.

My current wheel is 18x9 with 4.5" backspacing. The new wheels are 20x10 with 4.5" of backspacing. How will the extra 1" of width on the rim (with same backspacing) effect how the tire sits? I'm assuming with the same backspacing it will just push it out a little more. Just want to make sure before I order the wheels.

2005 F350 Crew Cab 4x4

PMF Rear Leaf Spring Conversion w/2011 Leaf Springs
20" Harley Wheels 305/55/20 Nitto Terra Grapplers
ARP Studs & EGR Delete from PowerStrokeMagic w/GearHead Tunes
Amp Research Steps, MBRP

"Two in the heart, and one in the head, I don't like repeat offenders, I like dead offenders!" -- Ted Nugent
TxFireman1972 is offline  
Sponsored Links
post #2 of 3 Old 02-11-2010, 04:44 PM
Compression Ignition Addict
Pahrump's Avatar
Join Date: Feb 2008
Location: Beaumont TX
Posts: 3,802
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
It will sit the same actually....but be wider.

I know..DUH!!

But it will sit in the wheel well the same depth the added width is on the outside...you will have no issues with clearance at all.

I ran 20x10s with the 4.5 and the same 37x13.50s that you are with 6" and had TONS of clearance everywhere.

2008 F250 FX4 CC SB Black on Black STOCK and SLOW...Rolled over and TOTALED...

2008 White with Black interior FX4 CCSB
Black C6 Vette
As far as actual HP numbers I have no idea. It don't snap your neck but.....It feels good.
Pahrump is offline  
post #3 of 3 Old 02-12-2010, 04:07 PM
Compression Ignition Addict
MDarrough's Avatar
Join Date: Aug 2008
Location: Texas Hill Country
Posts: 833
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 5 Times in 5 Posts
Feedback Score: 0 reviews
You're right...it will just push it out 1". The back-space is measured from the inside edge of the wheel to the mounting plate surface, so 4.5 BS is the same either way.


2011 F-350 4X4 Dually Lariat pulling a 2010 Sierra 355QBQ 5er -- Pic of Both

--- Sold - '01 F350, 8" lift, 38s --- Sold - '08 F-350 Leveled on 35s
MDarrough is offline  
Sponsored Links

Quick Reply

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:
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
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