1969 Camaro Wheel Fitment(read stuffing) advice - Team Camaro Tech
Wheels & Tires What fits what?

 
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post #1 of 8 (permalink) Old Jun 4th, 12, 03:36 PM Thread Starter
Bill
 
Join Date: Jun 2012
Location: Atlanta
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1969 Camaro Wheel Fitment(read stuffing) advice

Hi, read alot of posts here, but never actually posted anything.

A little background on the car first: It is a base car, 12 bolt rear end, multi-leaf springs, SSBC rear disc conversion kit, SSM Lift Bars, Current rear wheels: 15X8.5 with a 5" backspacing.

I am in update/change the car mode and trying to decide on the rear wheels for the car. My mind tells me that 18X9.5 with 6" backspacing will fit in here without a problem. I am adding an inch in wheel width while increasing the backspacing 1" to compensate. This should leave the quarter panel spacing the same, while decreasing the inner wheel well space(@ 2"). I have attached pictures showing the existing wheels and clearances. Note: the body does not drop much at all because of the lift bars. Tire size height will end up being the same as the current tires that are on the car---right at 26" tall. I am also curious about the tire size that others have used with a 18X9.5 wheel that fills out the rim with a little bit of rim/sidewall protection.

Because the wheels will essentially be custom made, I am skittish about ordering them. I wish I had some to try on first, and this is as close as I can get without buying first.

So what do you think? To clear or not to clear? Do you think it would be wise to increase the backspacing to 6.5" to give more outward clearance for the future if I decide to change the suspension?

Last edited by ZZ572StreetCar; Apr 25th, 13 at 07:22 PM.
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post #2 of 8 (permalink) Old Jun 8th, 12, 05:15 PM
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Al
 
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Re: 1969 Camaro Wheel Fitment(read stuffing) advice

The tried/true size on a 69 is a 9.5" wheel with 5.5" backspacing IF your rear is the stock width.. If you were to err in either direction then err on the side of too much backspacing since you can move it outboard with a small spacer. Tough to go the other way!

275mm seems to be the widest tire most guys run in the rears on lowered cars


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post #3 of 8 (permalink) Old Jun 8th, 12, 07:39 PM Thread Starter
Bill
 
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Re: 1969 Camaro Wheel Fitment(read stuffing) advice

Thanks for the response. I have measured and double checked. 6" backspacing should be fine. I could have done a 10" wheel with 6.5 backspacing and that would still clear on the inside, but I want a little wiggle room for tire flex. I have some spacers---and they are only there to clear the brake caliper. Back face of wheel touches the caliper. The car sits high because of the lift bars.

I will be going with the Centerline Split Spokes in 18" with 275/35's on the back. Fronts have yet to be determined. Once the rears are taken care of, then I can torture myself with the fronts. Because of the disc brake kit on the front, the wheels will be way offset---not much lip on the fronts....not much on the back either. Heh.
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post #4 of 8 (permalink) Old Jun 8th, 12, 07:54 PM
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Steiner
 
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Re: 1969 Camaro Wheel Fitment(read stuffing) advice

Have you pulled the rim off and checked/doublechecked the back spacing? I've got 275/40's on a 17x9.5 with 5.5" backspace and rear discs and on hard turns they just touch the inner fender on two different cars. Also looking at your pics, my rims should have an inch more on the outside yet they are further under the fender than yours appear to be. I don't get out much but I don't think I've ever seen an 8-8.5" rim with 5.5" backspace.

Your sidewall will be a little over a half inch less than this:






'69 Camaro
Dart 400-AFR 195-224/224 HR-Powerjection III TB with F.A.S.T. Sportsman XFI
TKO 600-Moser 3.42-Detroit Truetrac
500hp/538lbft

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'69 Camaro Beater-SFT 327-M20-Moser 4.10-sold
'02 Z/28 vert-stock-sold and totaled

Last edited by Steiner; Jun 8th, 12 at 08:07 PM.
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post #5 of 8 (permalink) Old Jun 9th, 12, 11:57 AM Thread Starter
Bill
 
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Re: 1969 Camaro Wheel Fitment(read stuffing) advice

I have definitely double checked. Kind of misleading the pictures I attached. Tires that are on those rims are 26 X 10.5 street slicks and have a lot of outward sidewall. Only rubbing I ever got was on the passenger side inner wheel well on the launch with 26 X 10.5 slicks with @8 psi in them before the burnout. A 6 grand launch will sometimes flex the body enough to make them touch.

I also have a 1/4" spacer in there for the back of the wheel face to clear the caliper. The new wheels should have plenty of space to clear---by at least 1/2"

I attached a picture to show the stance with the existing wheels. Should remain quite similar with the new ones---especially with the same diameter tires. Just an updated look and the ability to take a corner when needed without making myself nervous driving on the skinnies and street slicks.

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post #6 of 8 (permalink) Old Jun 9th, 12, 01:05 PM
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Re: 1969 Camaro Wheel Fitment(read stuffing) advice

You can do as you want but on my '69 the bottom line is 255/45/17's on 9.5" wheels w/5.5" bs will rub on the inside in some driveways and needed the fender lip trimmed slightly so no rubbing on fender side. That's with disc brakes and it's a convertible so there may be a bit more body flex than a coupe.

On the same wheels, I tried 275/40's when I had drum brakes and could not go around a corner without rubbing on the inside. Maybe things would be different with the rear end jaked up so the fender lip is above the tire but at stock height or lower, having 1/2" of clearence is not enough when cornering...

I think you'll find you will want to lower the back end with 18's and 35 series tires. It takes some sidewall to make the jacked up look work...

...Dennis

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post #7 of 8 (permalink) Old Apr 25th, 13, 07:25 PM Thread Starter
Bill
 
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Re: 1969 Camaro Wheel Fitment(read stuffing) advice

After over a year, finally completed my wheel tire purchase. Went with the Centerline split spoke wheels. @ 400 a piece. Added some yellow color into the wheel by hand.

Fronts are 18 X 7 with 4.75" rear spacing. 215/45/18

Rears are 18 X 9.5 with 6" rear spacing. 275/35/18

Will lower the rear end by an inch or so. Next set of rears will be a taller series tire @ 45 series I believe.
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post #8 of 8 (permalink) Old May 3rd, 13, 04:57 PM
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Re: 1969 Camaro Wheel Fitment(read stuffing) advice

In case ya wanted to go with a "taller" rear tire my 69 has 55(height) series tires on the rear.Although my wheels are 17"inch as opposed to your 18" wheels,they still have plenty of room.
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