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canyonblaster
Joined: 20 Aug 2012
Posts: 391
Location: Denver, CO, USA
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 Posted: Tue Oct 29, 2013 12:59 pm Post subject: Will these 17" wheels fit my 1981 931? |
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17" Fuchs reps by "FOX"
F = 7.5, ET35
R = 9.0, ET16
They are coming off of a 1981 911 SC, which they fit great....
Link to site that sells them:
http://www.wheeldude.com/catalog/product_info.php?products_id=313
Anyone know?
Thanks!
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PCA Licensed Club Racer & Driving Instructor Current P cars: 1981 931
Past P cars, 1985 944, 1987 951, 1990 911 C4, 2002 Boxster S, 2005 996 GT3, 2013 911 C2S
Daily Driver P cars: 2008 Cayenne GTS, 2013 Cayenne GTS |
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Raceboy
Joined: 01 Mar 2004
Posts: 2327
Location: Estonia, Europe
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| Posted: Tue Oct 29, 2013 4:25 pm Post subject: |
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Fronts will fit probably (I would not try to put more thasn 225 tire, preferrably 215), rears need you to remove the stock spacer, then they fit fine. But then you need new open ended lug nuts and long socket.
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'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold 
'84 924, turbocharged, sold.
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morghen
Joined: 21 Jan 2005
Posts: 9102
Location: Romania
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| Posted: Tue Oct 29, 2013 4:44 pm Post subject: |
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I think they will fit, but it will be a tight one and you will probably need to stretch the tires a bit.
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Raceboy
Joined: 01 Mar 2004
Posts: 2327
Location: Estonia, Europe
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| Posted: Tue Oct 29, 2013 6:54 pm Post subject: |
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215 or 225 mm tire on 7.5" rim is no stretch by any means. Even 205 tire would fit there quite ok.
9" wheels take 225 also (I have 225 Toyo on 9" BBS rim) and it looks ok, but 235 is better fit and 931 wheel well takes it easy (255 mm can be fit to rear with fender rolling).
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'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold
'84 924, turbocharged, sold.
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Wed Oct 30, 2013 12:05 am Post subject: |
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Wrong offset. . .not even close.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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morghen
Joined: 21 Jan 2005
Posts: 9102
Location: Romania
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| Posted: Wed Oct 30, 2013 12:31 am Post subject: |
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OEM spider webs are 7" with ET52. From the wheel lip to the body metal there is a gap of about 60mm (no spacer used) Please measure for yourself on your car the distance from the actual wheel (should be 7"ET52) to the inside of the rear arch.
9" wheels with ET 16 will extend outwards 61mm more than the standard spider webs.
In the end it all depends on what you consider as FIT...because 19x9 ET15 wheels have been tucked under the 931 body.
rears are 16x9 ET15
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Raceboy
Joined: 01 Mar 2004
Posts: 2327
Location: Estonia, Europe
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| Posted: Wed Oct 30, 2013 1:10 am Post subject: |
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| Rasta Monsta wrote: | | Wrong offset. . .not even close. |
Well, I have fitted 9" ET36 BBS RS rim with 245 tire at the back of narrow body 924 without any modification and it fits perfectly when you remove stock spacer.
But I guess your opinion is worth more than my first hand experience.
As for front these fit fine.
_________________
'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold
'84 924, turbocharged, sold.
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serzas
Joined: 20 Nov 2012
Posts: 52
Location: Lithuania, Europe
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| Posted: Wed Oct 30, 2013 4:59 am Post subject: |
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I would start that OEM spiderwebs are not 7j, so everything else written is irrelevant
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Porsche 931 1980 widebody CS / no, stock again
ex Porsche 944 1984 turbo look
ex Porsche 924 1982
ex Porsche 924 1978 |
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morghen
Joined: 21 Jan 2005
Posts: 9102
Location: Romania
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| Posted: Wed Oct 30, 2013 6:39 am Post subject: |
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really? 6J ? my bad then 
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Carrera RSR
Joined: 08 Jan 2010
Posts: 2312
Location: Somerset, UK
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| Posted: Wed Oct 30, 2013 6:40 pm Post subject: |
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Depends on your view of 'fit' and what suspension and tyre work you are happy to take on. Negative camber and some tyre stretch will help at the extremes of what will fit. Rolling the arches will certainly help although due to the thick dual layer of metal at the rear its not easy without damaging the paint.
Wheels are 17x9 in front with 215/40
and 17x10 in back running 225/45
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1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
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nickthompson
Joined: 26 Mar 2013
Posts: 873
Location: Central Georgia
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| Posted: Fri Nov 01, 2013 9:15 am Post subject: |
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| morghen wrote: | OEM spider webs are 7" with ET52. From the wheel lip to the body metal there is a gap of about 60mm (no spacer used) Please measure for yourself on your car the distance from the actual wheel (should be 7"ET52) to the inside of the rear arch.
9" wheels with ET 16 will extend outwards 61mm more than the standard spider webs.
In the end it all depends on what you consider as FIT...because 19x9 ET15 wheels have been tucked under the 931 body.
rears are 16x9 ET15
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Is this what spiderwebs looks like without center caps? Damn they look a hundred times better that way! Now I want some! |
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Rasta Monsta
Joined: 12 Jul 2006
Posts: 11733
Location: PacNW
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| Posted: Fri Nov 01, 2013 10:03 am Post subject: |
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| nickthompson wrote: | | Is this what spiderwebs looks like without center caps? |
That's a negative.
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Toofah King Bad
- WeiBe (1987 924S 2.5t) - 931 S3
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ThomasJoseph315
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| Posted: Mon Nov 04, 2013 1:33 pm Post subject: |
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| Carrera RSR wrote: | Depends on your view of 'fit' and what suspension and tyre work you are happy to take on. Negative camber and some tyre stretch will help at the extremes of what will fit. Rolling the arches will certainly help although due to the thick dual layer of metal at the rear its not easy without damaging the paint.
Wheels are 17x9 in front with 215/40
and 17x10 in back running 225/45
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I was just asking about rim/tire sizes are in the performance section and they couldn't answer. This is exactly what I was looking for. Even if I have to roll the fenders, these are nice. Do you need spacers at all? did you have to alter the offset? What info for the rims would I need to order a set like these?
Also, What suspension system would you recommend that perhaps maybe a bolt on solution?
Thank you for the great example too |
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morghen
Joined: 21 Jan 2005
Posts: 9102
Location: Romania
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| Posted: Mon Nov 04, 2013 5:40 pm Post subject: |
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| Rasta Monsta wrote: | | nickthompson wrote: | | Is this what spiderwebs looks like without center caps? |
That's a negative. |
As Rasta mentioned, those are not the standard wheels.
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nickthompson
Joined: 26 Mar 2013
Posts: 873
Location: Central Georgia
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| Posted: Mon Nov 04, 2013 6:28 pm Post subject: |
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| 10-4. Whatever wheels those are they look great on that car! |
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