Backspacing - Team Camaro Tech
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post #1 of 11 (permalink) Old May 1st, 09, 04:03 PM Thread Starter
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Backspacing

I am running 275,60,15 drag radials on the rear of my 68 camaro. I have them on 7" rims. They need to be on a wider rim. Was there a standard backspacing on 15x8, and 15x7 rims? Can you measure backspacing without taking tire off of rim?
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post #2 of 11 (permalink) Old May 2nd, 09, 02:19 PM
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Re: Backspacing

I run my 275/60/15 MT DR's on Weld Prostars 15 x 8 with 4.5" BS.




68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #3 of 11 (permalink) Old May 2nd, 09, 02:21 PM
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Re: Backspacing

Awesome stance!

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post #4 of 11 (permalink) Old May 2nd, 09, 05:54 PM Thread Starter
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Re: Backspacing

Looks good Brother! Your set up much like me!
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post #5 of 11 (permalink) Old May 2nd, 09, 06:24 PM
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Re: Backspacing

Doug,
Any inner wheelwell modifications with your combo?

Trying to put something bigger under mine & do not want to hammer or cut anything.

Was looking at 275/50's or 60's. Probably need the 60's for traction but I want to keep the stock look to it.

Thanks,
Lonnie
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post #6 of 11 (permalink) Old May 2nd, 09, 06:51 PM
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Re: Backspacing

Doug G,is your car stock height in the back? I am going to run the same tire you have but want mine to be a bit lower,how far will it go down with that tire?caltrac has 1" and 2" drop built into there split mono setups but told me I would rub up in the wheel well with the 2" what do you think,Thanks
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post #7 of 11 (permalink) Old May 3rd, 09, 05:31 AM
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Re: Backspacing

Same tire/wheel combo from when stock (mono springs bent) went to JCW 4-leaf replacement springs. Stock wheelwells inner and outer.
I'm looking into lowering the front (and maybe the rear too ?)

BTW, my driveway is not level so it does alter the stance a bit.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #8 of 11 (permalink) Old May 3rd, 09, 07:16 PM
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Re: Backspacing

The tires look mean under there.

I want to keep the look stock, but desperately need some tire under it.




These are stock 15x8 Vette wheels with 245/60's. I think they are 4" B.S. measured at the outer rim lip. (haven't measured them for about 15yrs.)

I definitely need more traction, but want the stock look.
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post #9 of 11 (permalink) Old May 4th, 09, 02:34 AM
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Re: Backspacing

275/60 will be about 1.5" wider overall.

68 Camaro~LSx ~all motor
1.54 60'--6.95 @ 98.45 660'--10.96 @ 121.53
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post #10 of 11 (permalink) Old May 4th, 09, 07:16 AM
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Re: Backspacing

I just did a lot of searching for these when I bought my rims. I purchased chrome 15X8 rally wheels with a 4.5" backspacing from coker. The painted wheels were a 4" backspacing so both could be considered "standard" but the 4.5" will pull your wheels into the fender a bit more and if I had to pick again I would still go with at least 4.5" as I am only running 245s. Good luck!

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Last edited by vincevs; May 4th, 09 at 01:29 PM. Reason: additional info
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post #11 of 11 (permalink) Old May 4th, 09, 10:11 AM
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Re: Backspacing

You need at least an 8" wide rear wheel with a 4.75 inch backspace. I am running 17x8's with 275/40R17's and it's a perfect fit with 4.75 backspacing.

Last edited by bama_69; May 4th, 09 at 10:15 AM. Reason: additional info.
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