Wheel Offset & BackSpacing 101

[Sweet 85 C10]

Wassup Guys! Was just wondering if it was possible if we can get a topic dedicated to Wheel Offset and BackSpacing. I know its been on alot of peoples minds lately including mine. And I wanted to see if someone can clear up the understanding of Wheel Offset and Back Spacing. Here are a few questions that I have.

1. My current project im doing 22x9.5 Front & 24x10 Rear-->rear backspacing 6.21 & front backspacing is 5.96-->question is will the rear wheels stick out or sit further in with a Ford 9 Inch Rear 58inches long 31 spline?

2. What size rear spacers would I need to make this work?

3. Do I need spacers for the front as well?

These are questions that I need help answering hopefully someone can answer these and give me a clue of a better understanding.

[Sweet 85 C10]

Anyone wanna chime in anytime!!!

[BigShoe24]

I believe the 58" width rear-end will pull your wheels in towards the frame, compared with a GM rear. Making your overall width narrower. Is the front all original, i.e. ( A-arms, spindles, crossmember)? I would think the wheel width, offset, would be ok. This all depends on height of suspension, and what type of set-up are you running out back? Stock trailing arms?

[lolife99]

Look here for a ton of info:

http://tires.tirerack.com/tires/Backspacing


Also,... what vehicle are you working on? Is the 58" measurement backing plate to backing plate? Or from the wheel mounting surface?

[63 & 64 Bowties]

There's a lot of info out there.
one search
A lot of wheel manufacturers have calculators on their website.

[Sweet 85 C10]

Originally Posted by BigShoe24

I believe the 58" width rear-end will pull your wheels in towards the frame, compared with a GM rear. Making your overall width narrower. Is the front all original, i.e. ( A-arms, spindles, crossmember)? I would think the wheel width, offset, would be ok. This all depends on height of suspension, and what type of set-up are you running out back? Stock trailing arms?

Thanks for the response! Im running an SD Raised Cross member up front. Out back is a bag on bar setup. I was just curious if these wheels will stick out or tuck perfectly. Thanks Again guys!