18" x 9.5" on 68 Camaro, backspacing? - Team Camaro Tech
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post #1 of 21 (permalink) Old Dec 12th, 04, 12:02 AM Thread Starter
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Is anyone currently running 18" x 9.5" rear rims on a 68 Camaro with a standard width rear and without any tubbing?
What backspacing are you running & what tire size?
Thanks

Roger

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post #2 of 21 (permalink) Old Dec 12th, 04, 02:58 AM
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Roger,
I've got 17x9.5's on the front of my Chevelle that I tested on my '67 Camaro one day. They are 5.5" backspace, and they leave about 1/2" of clearance between the wheel tub and the tire. That is with drum brakes, if you have disks, it may give you a little more clearance. It will also depend on what size tire you run as well, mine was with a 275/40/17 which has almost 11" section width.

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post #3 of 21 (permalink) Old Dec 29th, 04, 06:49 PM
 
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Yep, the standard MAX is a 275 tire on a 9.5" wheel w/ 5.5" b.s. when using a stock width axle and disc brakes...on a first gen.
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post #4 of 21 (permalink) Old Dec 29th, 04, 09:06 PM Thread Starter
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Thanks guys, Anthony is it the same for 17" & 18" rims?

Roger

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post #5 of 21 (permalink) Old Dec 30th, 04, 01:37 PM
 
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what rim you looking at 18 9.50?
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post #6 of 21 (permalink) Old Dec 30th, 04, 06:23 PM
 
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Yes Roger, it's the same for 17s and 18s...just the tire sidewall will be different between the two since you still want the same overall tire diameter...approx. 25.7" give or take...
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post #7 of 21 (permalink) Old Dec 30th, 04, 09:26 PM Thread Starter
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Jigga

Yes 18 x 9.5 rim, standard wheel wells & standard width rearend with discs.

Roger

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post #8 of 21 (permalink) Old Dec 30th, 04, 09:35 PM
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I have a 17 x 9.5, 275 40 17 on my 67 and I have tire rub on the inside wheel well. Every car is a little different and depending on how low you want to go. It will make a difference. 67's and 68's are different than 69's because of the rear quarter design.
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post #9 of 21 (permalink) Old Dec 30th, 04, 10:17 PM Thread Starter
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67RS RAG

Do you know what the backspacing is on your wheels?

thanks

Roger

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post #10 of 21 (permalink) Old Jan 1st, 05, 06:51 AM
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5.5 BS in rear and 4.75BS in front. Drums all around. I also have put 1/4" spacers on the rear to help but under hard accelaration and big bumps I get rub on the inside wheel well. Some others have the same problem and some get away with it. Like I said depending on how low you want your ride it can be avoided.
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post #11 of 21 (permalink) Old Jan 1st, 05, 07:02 AM
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with photos



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post #12 of 21 (permalink) Old Jan 1st, 05, 01:11 PM Thread Starter
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Thanks 67RSRAG.

Got any other pics you could send to me? Your car is a lot like where I'm hoping to get mine to, mine is a 68RSRAG [img]graemlins/thumbsup.gif[/img]

Roger

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post #13 of 21 (permalink) Old Jan 2nd, 05, 02:39 PM
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67RS Rag, what size tires do you have on the rear? Even with the 1/4" spacers, do you still hit on the inside of the tire, or just on the outside now?

Thanks!
Rob

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post #14 of 21 (permalink) Old Jan 2nd, 05, 05:19 PM
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Aussie let me know if there is something specific you are looking for and I will be happy to send you some.
Rob, I have 275 40 17 on the rears and with the spacers I am still hitting on the inside wheel but not on the outside
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post #15 of 21 (permalink) Old Jan 4th, 05, 07:07 PM
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I have 255 on the rear with 9.5 inch wheels and 5.5 backspacing. I bought 1/4 spacers a couple of weeks ago, but have not installed them yet. I also don't like the look of the 255 and want to replace them with 275 or 285/40. Your rear wheels are 9.5?

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