Correct backspacing and bolt pattern?
02-27-2011, 05:40 PM
#1
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Correct backspacing and bolt pattern?
Hi guys, Im gonna buy some of the following:
Cragar Superspoke 15x7 in front with BFG T/A 225/60/15
Cragar Superspoke 15x8 in back with BFG T/A 275/60/15
When it comes to wheels and backspacing I know nothing so I was wondering what bolt pattern and what backspacing to order
Thanks guys!!!
Cragar Superspoke 15x7 in front with BFG T/A 225/60/15
Cragar Superspoke 15x8 in back with BFG T/A 275/60/15
When it comes to wheels and backspacing I know nothing so I was wondering what bolt pattern and what backspacing to order
Thanks guys!!!
02-27-2011, 05:59 PM
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Correct backspacing and bolt pattern?
bolt pattern, 5x4.75, backspacing, rear can be 4.5" to 5", front should be 4-4.5".
the factory 15x7's use a zero offset, or 4" of backspacing, and the factory 16x8's use a little over 5 in the rear and 4.5 in the front.
so to keep the wheels in the same place as your stock ones, you would want 4" in the front and 5 in the rear, but 4.5 in the rear will work just as well and bring the tire out a little more.
the factory 15x7's use a zero offset, or 4" of backspacing, and the factory 16x8's use a little over 5 in the rear and 4.5 in the front.
so to keep the wheels in the same place as your stock ones, you would want 4" in the front and 5 in the rear, but 4.5 in the rear will work just as well and bring the tire out a little more.
10-29-2012, 09:11 AM
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Car: 1990 Camaro RS
Engine: 350 Vortec Demon 650CFM
Transmission: 700R4
Axle/Gears: Posi
Re: Correct backspacing and bolt pattern?
Is it possible to run the same backspacing for all 4 wheels? would it be 4.5". and whats the backspace?
10-29-2012, 03:36 PM
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Car: 86 Trans Am, 92 Firebird
Engine: 408 sbc, 3.1L of raw power
Transmission: TKO600, T5
Axle/Gears: Moser 9", 3:70 trutac, 3:23 torsion
Re: Correct backspacing and bolt pattern?
Depends what width wheeels. An 8" will will fit with 4.5" of bs front and rear if that's what you are asking. Backspacing is the distance from the wheels mounting surface to the back most part of the wheel
10-28-2018, 02:55 PM
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Re: Correct backspacing and bolt pattern?
Backspacing Explained...
https://www.wheelpros.com/page/offset-explained/9
I just learned something, so you can too :P
https://www.wheelpros.com/page/offset-explained/9
I just learned something, so you can too :P
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