17X8 Hopsters on 69 rear - Team Camaro Tech
Wheels & Tires What fits what?

 
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post #1 of 8 (permalink) Old Feb 19th, 12, 07:39 AM Thread Starter
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Jeremy
 
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17X8 Hopsters on 69 rear

I finally got my Hopsters, 17X7 in the frt and 17X8's in the rear... I am going to be running 225/50/17's in the frt and 255/50/17's in the rear...

My question is.. My 17X8's are the 4.75 or 4.81 in bs... I measured just at 4.75... anyway... I was wondering if I need to run 1/4 in spacers to space it out to a 4.5 in backspacing or do I just leave them alone... I don't have the tires yet, so I cannot test fit them... Anyone have any ideas? Forgot to mention that I have rear drums... if that matters... Thanks!

69 Camaro Finally restored. New 496, 700R4, 3200 stall, 3.90 12 bolt posi


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post #2 of 8 (permalink) Old Feb 19th, 12, 08:12 AM
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Steiner
 
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Re: 17X8 Hopsters on 69 rear

4.75" sounds good for an 8" rim on the back.

'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
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'69 Camaro Beater-SFT 327-M20-Moser 4.10-sold
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post #3 of 8 (permalink) Old Feb 19th, 12, 08:18 AM
DjD
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Re: 17X8 Hopsters on 69 rear

You can run up to about 5.5" bs with a 17" wheel, your 4.75" should be fine with the right tire but the 255x50 tire may cause a problem. 255x50 17 is 27.1" tall and has a 10.4" section width. That means the tire will buldge out 1.2" on each side of the rim and is most likely going to rub on the inner fender, as well the 50 series sidewall is going to flex under load.

I run 17x9.5 with 5.5" bs and 255x45 17 which is 26.1" tall and has a 10" section width. The tire is only a 1/4" wider than the rim on each side. The sidewall doesn't flex very much and under certain condition the tire will scuff the inner fender.

You might get away with a 1/4" spacer but that could require replacing the wheel studs with longer ones. The 45 series sidewall would be a bit of a help as well; not as tall, not as wide. I really think 245x45 or 235x50 with their 9.6" section width would be a better choice. The 245x45 is 25.7" tall and the 235x50 is 26.3" tall. The 9.6" section width is taking .4" off each side of the rim compared to the 10.4" width of the 255x50. Also a 26" tall tire is not a magic number but it fits the '69 really well visually. The ever popular 235x60 15 that everyone with rally wheels tends to run is 26.1" tall and 9.5" wide.

Hope some of that helps...

...Dennis

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post #4 of 8 (permalink) Old Feb 20th, 12, 07:51 PM Thread Starter
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Jeremy
 
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Re: 17X8 Hopsters on 69 rear

Quote:
Originally Posted by DjD View Post
You can run up to about 5.5" bs with a 17" wheel, your 4.75" should be fine with the right tire but the 255x50 tire may cause a problem. 255x50 17 is 27.1" tall and has a 10.4" section width. That means the tire will buldge out 1.2" on each side of the rim and is most likely going to rub on the inner fender, as well the 50 series sidewall is going to flex under load.

I run 17x9.5 with 5.5" bs and 255x45 17 which is 26.1" tall and has a 10" section width. The tire is only a 1/4" wider than the rim on each side. The sidewall doesn't flex very much and under certain condition the tire will scuff the inner fender.

You might get away with a 1/4" spacer but that could require replacing the wheel studs with longer ones. The 45 series sidewall would be a bit of a help as well; not as tall, not as wide. I really think 245x45 or 235x50 with their 9.6" section width would be a better choice. The 245x45 is 25.7" tall and the 235x50 is 26.3" tall. The 9.6" section width is taking .4" off each side of the rim compared to the 10.4" width of the 255x50. Also a 26" tall tire is not a magic number but it fits the '69 really well visually. The ever popular 235x60 15 that everyone with rally wheels tends to run is 26.1" tall and 9.5" wide.

Hope some of that helps...


Thanks Dennis... i have the size of tires on there right now in a 15X7 with a 3.5 in bs and they don't rub, and I have a 3.90 gear, so I am really wanting to run the 255/50 tire so it doesn't throw off the speedometer and raise the cruise rpm... I am at 2600 rpm at the moment when the converter locks up, at about 65 mph and it is perfect, plus my rear end sits pretty high at the moment... The tires are only $115 a pc through Summit, so I believe I will try them, A few people in town have the same exact tire set up, but they are running TTII's and they don't have any problem...I don't know what their backspacing are... My only question was about the backspacing...If worst comes to worst, I can change the studs out to longer ones... Are the spacers dangerous?

69 Camaro Finally restored. New 496, 700R4, 3200 stall, 3.90 12 bolt posi


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post #5 of 8 (permalink) Old Feb 21st, 12, 03:57 PM
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Re: 17X8 Hopsters on 69 rear

I run tt2 on my 69 17x8 4.75 b.s. with 225/50/17s front and 255/50/17s rear no issues
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post #6 of 8 (permalink) Old Feb 21st, 12, 03:59 PM Thread Starter
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Jeremy
 
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Re: 17X8 Hopsters on 69 rear

Quote:
Originally Posted by stevie View Post
I run tt2 on my 69 17x8 4.75 b.s. with 225/50/17s front and 255/50/17s rear no issues
sweet! You have any pics?

69 Camaro Finally restored. New 496, 700R4, 3200 stall, 3.90 12 bolt posi


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post #7 of 8 (permalink) Old Feb 22nd, 12, 06:46 PM
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steve
 
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Re: 17X8 Hopsters on 69 rear

Jeremy my laptop is down can't retrieve my pics will take some with my cell and post
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post #8 of 8 (permalink) Old Feb 22nd, 12, 07:09 PM
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Re: 17X8 Hopsters on 69 rear

Jeremy i have a side view pic if you go to main showroom search 69 540 camaro.
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