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17x9.5, zg flares, what backspacing?


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Tires will be 275/40/17 in the rear, 265/40/17 in the front.

 

Possibly a backspacing with stock strut assemblies and not coilovers. I figured i can push them far out enough to clear the stock perch with ZG flares being that its only a 9.5" wheel

 

Please help me out guys, I gotta place the order.

 

I was thinking something like 4.5 rear, 4.75 front?????

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-19 on a 9.5" wheel is only 4.5" backspacing, seems like it wouldnt stick out far enough to fill the ZG fenders, seems like it would need more like a 4" backspacing to push the tires further out to fill the bigger zg fenders

 

I know people are running 4" backspacing on a 8" wheel in stock fenders

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275 on a -19 wheel will have a front space of 6.16" and a 9.5 wheel will have a front space of 5.99". Both of those measurements are past to fender on a stock Z and close to the edge of a zg flare. The flares are supposed to give about 1.5"-2" of extra clearence wich is about right where the set up you are looking at is. My race tires are the = to a 265 section tire and they are mounted on -12 offset wheels, they over 1" past the outside of the fenders.

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Well according to my math, a -19 mm offset wheel at 9.5 in wide rim should be 4.5 in backspace. That should push the wheel out 2 inchs from the rear fender. That sounds about right, although your pushing the limits if the ZG flares only go 1.5 in. I think 4.5 in B/S is the limit for a stock coiled suspension.

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Guest JAMIE T

My 18 x 9.5" (265/35/18 tires) wheels have a 5.5" backspace. Call it what you want in offset...

 

They sit perfectly in the front ZG flare. I haven't tried the rear (275/35/18 tires) yet. I tried the wheel only without a tire on the back of Mikelly's car at one of his shindigs and it was a clean fit that set near perfectly in the ZG wheel well. Could have probably used a 1/2" spacer, but it still looked great. Both are with coilovers obviously.

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My 18 x 9.5" (265/35/18 tires) wheels have a 5.5" backspace. Call it what you want in offset...

 

They sit perfectly in the front ZG flare. I haven't tried the rear (275/35/18 tires) yet. I tried the wheel only without a tire on the back of Mikelly's car at one of his shindigs and it was a clean fit that set near perfectly in the ZG wheel well. Could have probably used a 1/2" spacer' date=' but it still looked great. Both are with coilovers obviously.[/quote']

 

 

so with a 5.5 backspace it sat perfect if you had a 1/2 spacer, thats great, cause i ordered 5" backspace, so the rear should sit fine

 

For the front i also got 5" backspace, that worries me a bit, because i dont think the front has as much clearance, i ordered 5.5 originally ,but then changed it because i didnt want the wheels to sit at different tracks, plus it was going to take away 1/2" of the wheel lip;)

 

We'll see, worst case senario is that i can have a local shop machine a bit of the rear of the wheel center off, since i hear that centerlines come with a pretty thick bore

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