How much backspacing with 20x9s? Clearance issues?

[GreaseDog]

Hey guys, picking up a 92 C1500 in the next couple weeks, and I'm wanting to static drop it, either 2/4 or 4/6. How much backspacing can I run and still keep the tires just inside the fender lip, and not too sunken in? Iirc the wheels are around 6" BS. Tires will be 255 45 20s.

 

[someotherguy]

Sounds like an unusual wheel. Typically you don't see 6" backspacing unless it's 20x10. 20x8.5 is more commonly seen than 20x9, and backspacing in 20x8.5 is all across the board depending on brand and model. With 20x8.5 I prefer a bare minimum of 5", 5.25" is better, 5.5" is great - I'd say if the wheel really is 20x9 you would want minimum 5.5"

Richard

 

[GreaseDog]

They're '15/'16 Yukon Denali wheels.

http://www.hubcaphaven.com/p/21581/aly5699-gmc-yukon-wheel-grey-machined-22796082.html

 

[someotherguy]

My guess will be it's a 20x8.5 and they're measuring the full width of the wheel, lip to lip.

Richard

 

[GreaseDog]

Just threw a tape on them. Lip to lip, they're 10". Bead to bead they're almost exactly 9"

 

[someotherguy]

Cool...did you get an accurate measure on the backspacing then?

Richard

 

[GreaseDog]

I'll grab one tonight. My phone went dead as I tried to snap a couple pics of the width.

 

[GreaseDog]

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10" wide lip to lip, 9" bead to bead.

 

[GreaseDog]

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