1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

15x8 offset

Old 02-07-12, 05:27 AM
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15x8 offset

Ok guys I've searched and couldnt find anything. (I thought it would have been in the archive) Anyway I'm wanting to use Enkei 92s like these.
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Size:  39.5 KB I want to run the 8 wide front and rear what offset do I need for them to be flush with zg flares? should I go wider in the rear to match the zgs.?

Thanks
-Austin
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Old 02-07-12, 07:34 AM
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4.5" backspace
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Old 02-07-12, 08:43 AM
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Zero offset on the front is pretty much flush back needs about - 5 to sit flush.
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Old 02-07-12, 08:53 AM
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Here is 15x8 zero offset









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Old 02-07-12, 01:04 PM
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You must have a pretty wide tire on those wheels because a 15x8 zero offset/4.5 backspacing does not set that far outside the fender. The wheels with sit almost flush, just a touch wider, with the fender and some 205x50s fit quite nicely.
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Old 02-08-12, 08:53 AM
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0 offset is 4"? I want to see pix of the inner tires n wheel well
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Old 02-08-12, 10:14 AM
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i have the ZG flares on my car but im running 16x8.5s with a -6 offset. They sit pretty flush but on 205s. Running a 0 offset would allow you to run a wider tire. 0 offset with 225s should fit perfect. Im planning on running wider flares soon just so I can run something wider than a 205 without rubbing.

check these out:
http://www.zforceproductions.com/ind...d=15&Itemid=60
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Old 02-08-12, 11:06 AM
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Originally Posted by lx_machado View Post
Here is 15x8 zero offset









Yep, that looks about identical to my 13x8 Revolutions (4" BS) and my 13x8 Diamond Racing (4" BS).



.
Attached Thumbnails 15x8 offset-262134_201145899938034_159960587389899_630746_3343594_n.jpg   15x8 offset-picture-173.jpg  
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Old 02-09-12, 09:46 PM
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A zero offset 8" wide wheel generally has 4.5" of back spacing in my experience. Put a tape measure on a 8" wheel and you will see that they are pretty close to 9" wide from outer edge to outer edge.

From the pictures it looks like a +15mm or +25mm would be a better choice. Also some camber on the front would pull the tire in better.

Thanks for posting. I will be running 15x8 wheels on my race car and I have been trying to figure out the proper off-set. I will be running a 225/45 tire.
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Old 02-09-12, 10:57 PM
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Originally Posted by lx_machado View Post
Here is 15x8 zero offset

thats pretty badass just saying
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Old 02-10-12, 03:22 PM
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Thanks guys for the response mhat is the widest tire possible in the rear with ZG flares?
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Old 02-10-12, 03:41 PM
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Originally Posted by slidewithstyle View Post
Thanks guys for the response mhat is the widest tire possible in the rear with ZG flares?
if you're not doing at least 245's you're wasting your time.... 225/45/15's fit the stock fenders with no rolling....
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Old 02-10-12, 06:41 PM
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Thanks I need as much rubber on the back as I can get.
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Old 02-11-12, 12:32 AM
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I had a 15x8 +20 Rota RB on the rear and it sat JUST inside the fender. Rubbed a tad but nothing to sweat over. The front was another story. Using 15mm spacers with the same size wheel the tire poked outside the fender a bit and was able to rub the set screw on the coilover sleeve perch if it was clocked the right (wrong?) way. It's tight up front. A 7.5 inch +14 (which I have now) fits damn near perfectly. A slightly narrower tire will keep it from tearing up my fenders any more than they have been.

PS, I have ZG rear flares that I bought but won't be using, if your interested.
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Old 02-11-12, 06:26 PM
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Old 02-11-12, 07:31 PM
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Originally Posted by 82FanTC View Post
You must have a pretty wide tire on those wheels because a 15x8 zero offset/4.5 backspacing does not set that far outside the fender. The wheels with sit almost flush, just a touch wider, with the fender and some 205x50s fit quite nicely.
The tire size on that car is 205/50/15

I would have kept the wheels it they were flush

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Old 02-11-12, 09:36 PM
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15x8, 4.75 backspace but have been better if I were to run 225-45 series instead of 205-50
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same rims in my tender blue RX-3 with VW Cabriolet fender flares
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