Backspacing question
 

Realizing most people (with 20's) run 20x8.5 up front with 5.25" Backspacing .. 255/40/20

4.5" drop seems to be the norm. I am about to drop my GMC and that's around where I'll be too.

I want just a touch more sidewall up front. I have 255/45/20's ready to go. I am about to buy my wheels and I'm down to two. The issue is the ones I really want only come in 20x8 with 4.5" Backspacing.

So .. in theory if it were an 8.5" wheel instead it would be the same as 5" Backspacing. Just shove that extra width to the back. ..

However: 20x8.5 with 5" Backspacing vs 5.25" BS ? Would that be a show stopper? Would that extra .25" to the outside make a huge difference? Any pictures down the side of a truck with 20x8.5 5.25" Backspacing on a 255/40? ~4.5" drop.

I just want to see how much room it has. .. An 8" wheel will pull my 255/45 in a little so the section width will be about the same as a 5.25" BS 255/40.

Think it would be ok?

Thanks.

Re: Backspacing question
 

I don't think a .25" is going to make a hug difference on a static dropped truck. The 4.5" is a pretty good drop though, and might rub some on the inner fender well at the top or the corners when turning.

What wheels are you looking at? Maybe you can google the wheel name and see if you can find pictures of it on a C10, if no one here has that exact backspace.

Re: Backspacing question
 

It will have a Hellwig front sway bar and worst case I could do modular spindles? .. Humm
the sway bar might hold down the body roll.. ?

Centerline Boulevard ( look like Salt Flats )
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Re: Backspacing question
 

Yes, the modular spindle will move the wheel in 3/4" per side. Is it easier to move the wheel out, than in. :metal:

Re: Backspacing question
 

http://www.classicperform.com/Store/...6GSK-55213.htm

Am I thinking correctly?

Thank You for your help. ..

Re: Backspacing question
 

I had a 5 inch drop on my old truck and at one time with 20x8 and a 4 3/4 bs!!! Rubbed like crazy!!!!
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Re: Backspacing question
 

Recall what size tire you had?
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Re: Backspacing question
 

I have the CPP modular spindles w/ the 13" rotors. I have 20x8.5 w 4.75 bs and 255/40-20s, never rubs, couldnt be happier.